Applicability of static supercritical carbon dioxide extraction in biogeochemical characterization of oil shalesLuik, Hans; Luik, Lea; Palu, Vilja; Šarajeva, Galina; Gregor, AndreAmerican journal of analytical chemistry2014 / p. 173-180 : ill

Catalytic hydrogenation of thermobitumenKrasulina, Julia; Bitjukov, Mihhail; Vink, Natalia; Gregor, Andre; Luik, Lea; Luik, HansInternational oil shale symposium : Tallinn, Estonia, June 10-13, 20132013 / p. 56-57

Cleaner liquefaction of oil shale - is it feasible?Luik, Hans; Luik, LeaInternational Symposium "Oil shale 100 years" : Estonia, Sept. 20-23, 2016 : [abstracts]2016 / p. 41-42

Co-conversion of Salix biomass and oil shale in the medium of supercritical waterLuik, Hans; Palu, Vilja; Tamvelius, Hindrek; Luik, Lea; Sokolova, Julia16th European Biomass Conference & Exhibition : from Research to Industry and Markets : proceedings of the International Conference held in Valencia, Spain, 2-6 June 20082008 / p. 2007-2009

Comparative hydroliquefaction of pine Pinus sylvesteris wood and bark [Electronic resource]Luik, Hans; Luik, Lea; Vink, Natalia; Kozõreva, Jekaterina; Sokolova, Julia15th European Biomass Conference & Exhibition : from Research to Market Deployment : Florence, Italy2007 / p. 1951-1954 [CD-ROM] https://www.etis.ee/Portal/Publications/Display/4b3b9aa0-26f4-4ddd-81f7-6d0e5095e579

Comparative thermochemical conversion processing of biomass and fossil fuel [Electronic resource]Luik, Hans; Luik, Lea; Veski, Rein14th European Biomass Conference : proceedings2006 / p. 727-730 [CD-ROM]

Conversion of pine Pinus sylvestris cones with supercritical waterLuik, Lea; Luik, Hans; Tamvelius, Hindrek; Palu, Vilja; Kruusement, Kristjan17th European Biomass Conference & Exhibition from Research to Industry and Markets : proceedings of the International Conference held in Hamburg, Germany, 29 June - 3 July 20092009 / p. 1941-1944

Conversion of the Estonian fossil and renewable feedstocks in the medium of supercritical waterLuik, Lea; Luik, Hans; Palu, Vilja; Kruusement, Kristjan; Tamvelius, HindrekAdvances in Analytical and Applied Pyrolysis 2006-2008 : book of abstracts of the communications presented to the 18th International Symposium on Analytical and Applied Pyrolysis : Lanzarote, Canary Islands, May 18-23, 20082008 / p. 247

Conversion of the Estonian fossil and renewable feedstocks in the medium of supercritical waterLuik, Lea; Luik, Hans; Palu, Vilja; Kruusement, Kristjan; Tamvelius, HindrekJournal of analytical and applied pyrolysis2009 / 1/2, p. 492-496 : ill https://www.sciencedirect.com/science/article/pii/S0165237008001253

Conversion of willow biomass at varied thermochemical conditions [Electronic resource]Luik, Hans; Luik, Lea; Tamvelius, Hindrek14th European Biomass Conference : proceedings2006 / p. 940-942 [CD-ROM]

Co-processing of biomass and heavy shale oil using catalytical hydrocracking methodLuik, Hans; Luik, Lea; Johannes, Ille; Tiikma, Laine; Sokolova, Julia17th European Biomass Conference & Exhibition from Research to Industry and Markets : proceedings of the International Conference held in Hamburg, Germany, 29 June - 3 July 20092009 / p. 1082-1084

Coprocessing of heavy shale oil with polyethylene wasteTiikma, Laine; Tamvelius, Hindrek; Luik, LeaJournal of analytical and applied pyrolysis2007 / 1/2, p. 191-195

Co-processing of oil shale with some other energy sourcesLuik, Hans; Bojesen-Koefoed, Jorgen; Luik, Lea; Palu, Vilja; Sokolova, Julia; Tamvelius, Hindrek; Tiikma, LaineInternational Oil Shale Symposium : Tallinn, Estonia, June 8-11, 2009 : future energy solutions : come and share your vision!2009 / p. 71-72 http://www.ester.ee/record=b4775098*est

Copyrolysis of heavy shale oil with waste polyethyleneTiikma, Laine; Tamvelius, Hindrek; Luik, Lea17th International Symposium on Analytical and Applied Pyrolysis : Budapest, Hungary, May 21-26, 2006 : book of abstracts2006 / p. 159

Diktüoneema põlevkivi vesikonversioon reagentide juuresolekulŠarajeva, Galina; Palu, Vilja; Kruusement, Kristjan; Luik, LeaXXXIII Eesti Keemiapäevad : teaduskonverentsi teesid2013 / lk. 68

Effect of different temperature-time combinations in kerogen pyrolysis to thermobitumen and oilLuik, Lea; Luik, Hans; Šarajeva, Galina20th International Symposium on Analytical and Applied Pyrolysis : PYRO 2014 : 19-23 May 2014, Birmingham, UK : conference guide and abstracts2014 / p. 80

Effect of different temperature-time combinations in kerogen pyrolysis to thermobitumen and oilŠarajeva, Galina; Luik, Lea; Luik, Hans2014 proceedings of Second International Conference On Advances in Applied Science and Environmental Engineering : 20-21 December, 2014, Kuala Lumpur, Malaysia2014 / p. 40-47 : ill

Effect of different temperature-time combinations in kerogen pyrolysis to thermobitumen and oilŠarajeva, Galina; Luik, Lea; Luik, HansInternational journal of environmental engineering2015 / p. 174-181 : ill http://seekdl.org/nm.php?id=5785

Effect of organic matter content and type of mineral matter on the oil yield from oil shalesJohannes, Ille; Luik, Hans; Bojesen-Koefoed, Jorgen; Tiikma, Laine; Vink, Natalia; Luik, LeaOil shale2012 / p. 206-221 : ill https://www.researchgate.net/publication/274439293_Effect_of_organic_matter_content_and_type_of_mineral_matter_on_the_oil_yield_from_oil_shales

Fast pyrolysis of Estonian oil shaleArpiainen, Vesa; Luik, Hans; Luik, Lea; Oasmaa, Anja; Solantausta, YrjöInternational Oil Shale Symposium : Tallinn, Estonia, June 8-11, 2009 : future energy solutions : come and share your vision!2009 / p. 29-30 http://www.ester.ee/record=b4775098*est

Fundamentals to the maximum upgrading of oil shaleLuik, Hans; Luik, Lea; Šarajeva, Galina; Krasulina, Julia; Johannes, Ille; Kruusement, KristjanAbstracts book of 34th Oil Shale Symposium : October 13-17, 2014, Colorado School of Mines, Golden, Colorado2014 / p. 45

Gasification and liquefaction of solid fuels by hydrothermal conversion methodsKruusement, Kristjan; Luik, Hans; Waldner, Maurice; Vogel, Frederic; Luik, LeaJournal of analytical and applied pyrolysis2014 / p. 265-273 : ill

Kinetics of kukersite low-temperature pyrolysis in autoclavesJohannes, Ille; Tiikma, Laine; Zaidentsal, Aleksei; Luik, LeaAdvances in Analytical and Applied Pyrolysis 2006-2008 : book of abstracts of the communications presented to the 18th International Symposium on Analytical and Applied Pyrolysis : Lanzarote, Canary Islands, May 18-23, 20082008 / p. 181

Kinetics of kukersite low-temperature pyrolysis in autoclavesJohannes, Ille; Tiikma, Laine; Zaidentsal, Aleksei; Luik, LeaJournal of analytical and applied pyrolysis2009 / 1/2, p. 508-513 : ill

Liquefaction and gasification of Estonian oil shales in the medium of hot compressed waterKruusement, Kristjan; Luik, Hans; Luik, Lea; Palu, Vilja; Vink, Natalia; Vogel, FredericInternational Oil Shale Symposium : Tallinn, Estonia, June 8-11, 2009 : future energy solutions : come and share your vision!2009 / p. 42-43 http://www.ester.ee/record=b4775098*est

Liquefaction of Estonian kukersite oil shale kerogen with selected superheated solvents in static conditionsLuik, Hans; Palu, Vilja; Bitjukov, Mihhail; Luik, Lea; Kruusement, Kristjan; Tamvelius, Hindrek; Pryadka, N.Oil shale2005 / 1, p. 25-36 : ill

Parallels between slow pyrolysis of Estonian oil shale and forest biomass residuesLuik, Hans; Luik, Lea; Tiikma, Laine; Vink, NataliaJournal of analytical and applied pyrolysis2007 / 1/2, p. 205-209

Parallels between slow pyrolysis of Estonian oil shale and forest biomass residuesLuik, Hans; Luik, Lea; Tiikma, Laine; Vink, Natalia17th International Symposium on Analytical and Applied Pyrolysis : Budapest, Hungary, May 21-26, 2006 : book of abstracts2006 / p. 158

Peat semicoking and hydrocrackingLuik, Hans; Palu, Vilja; Luik, Lea; Sokolova, Julia; Bojesen-Koefoed, JorgenJournal of analytical and applied pyrolysis2009 / 1/2, p. 497-501 : ill https://www.sciencedirect.com/science/article/abs/pii/S0165237008001241

Peat semicoking and hydrocrackingLuik, Hans; Palu, Vilja; Luik, Lea; Sokolova, JuliaAdvances in Analytical and Applied Pyrolysis 2006-2008 : book of abstracts of the communications presented to the 18th International Symposium on Analytical and Applied Pyrolysis : Lanzarote, Canary Islands, May 18-23, 20082008 / p. 248 https://www.sciencedirect.com/science/article/pii/S0165237008001241

Pyrolysis and supercritical water conversion of pine Pinus sylvestris ingredientsLuik, Hans; Luik, Lea; Palu, Vilja; Tamvelius, Hindrek21st European Biomass Conference and Exhibition2013 / p. 914-917

Stepwise supercritical carbon dioxide extraction of Estonian oil shales in batch autoclave in temperature region 40-150 °CLuik, Hans; Palu, Vilja; Luik, Lea; Šarajeva, GalinaOrganic Geochemistry : Trends for the 21st Century : book of abstracts of the communications presented to the 26th International Meeting on Organic Geochemistry, Costa Adeje, Tenerife - Spain, September 15-20, 2013. Vol. 22013 / p. 205-206

Study of the organic liquid obtained from supercritical water conversion of Estonian dictyonema and kukersite oil shale by PY-GC/MSChiavari, Giuseppe; Fabbri, Daniele; Finessi, Emanuela; Luik, Hans; Luik, Lea; Montalbani, Simona; Prati, SilvaInternational Oil Shale Symposium : Tallinn, Estonia, June 8-11, 2009 : future energy solutions : come and share your vision!2009 / p. 67 http://www.ester.ee/record=b4775098*est

Termobituumeni katalüütiline hüdrogeenimineKrasulina, Julia; Bitjukov, Mihhail; Vink, Natalia; Gregor, Andre; Luik, Lea; Luik, HansXXXIII Eesti Keemiapäevad : teaduskonverentsi teesid2013 / lk. 35

Termochemical co-liquefaction of biomass wastes and Estonian oil shale [Electronic resource]Luik, Lea; Luik, Hans; Bitjukov, Mihhail; Kruusement, Kristjan; Sokolova, Julia; Tamvelius, HindrekSuccess & visions for bioenergy. Thermal processing of biomass for bioenergy, biofuels and bioproducts2007 / [8] p. [CD-ROM]

Thermochemical co-liquefaction of woody biomass and fossil fuel in supercritical water [Electronic resource]Luik, Lea; Luik, Hans; Vink, Natalia; Kruusement, Kristjan; Veski, Rein15th European Biomass Conference & Exhibition : from Research to Market Deployment : Florence, Italy2007 / p. 1955-1959 [CD-ROM]

Thermochemical conversion of woody biomass by using slow pyrolysis and direct hydrogenation methodsLuik, Hans; Luik, Lea; Gregor, AndreWasteEng 2014 : 5th International Conference on Engineering for Waste and Biomass Valorisation, Rio de Janeiro, Brazil, August 25-28, 2014 : proceedings2014 / p. 1532-1541

Thermochemical conversion of woody biomass by using slow pyrolysis and direct hydrogenation methodsLuik, Hans; Luik, Lea; Gregor, AndreWasteEng 2014 : 5th International Conference on Engineering for Waste and Biomass Valorisation, Rio de Janeiro, Brazil, August 25-28, 2014 : abstracts2014 / p. 217

Transformations of biomass internal oxygen at varied pyrolysis conditionsLuik, Hans; Johannes, Ille; Palu, Vilja; Luik, Lea; Kruusement, Kristjan17th International Symposium on Analytical and Applied Pyrolysis : Budapest, Hungary, May 21-26, 2006 : book of abstracts2006 / p. 139

Transformations of biomass internal oxygen at varied pyrolysis conditionsLuik, Hans; Johannes, Ille; Palu, Vilja; Luik, Lea; Kruusement, KristjanJournal of analytical and applied pyrolysis2007 / 1/2, p. 121-127

Trends in biomass thermochemical liquefaction : global experience and recent studies in EstoniaLuik, Hans; Palu, Vilja; Luik, Lea; Kruusement, Kristjan; Tamvelius, Hindrek; Veski, Rein; Vetkov, Nikolai; Vink, Natalia; Bitjukov, MihhailProceedings of the Estonian Academy of Sciences. Chemistry2005 / 4, p. 194-229 : ill

Upgrading of Estonian shale oil heavy residuum bituminous fraction by catalytic hydroconversionLuik, Hans; Luik, Lea; Johannes, Ille; Tiikma, Laine; Vink, Natalia; Palu, Vilja; Bitjukov, Mihhail; Tamvelius, Hindrek; Krasulina, Julia; Kruusement, Kristjan; Nechaev, IgorFuel processing technology2014 / p. 115-122 : ill

Upgrading shale oil heavy fractions with biomass via catalytical hydroprocessing [Electronic resource]Luik, Hans; Luik, Lea; Tiikma, Laine; Vink, Natalia; Kozõreva, JekaterinaSuccess & visions for bioenergy. Thermal processing of biomass for bioenergy, biofuels and bioproducts2007 / [7] p. [CD-ROM]

Utilization of solid waste as an additive in shale oil productionLuik, Lea; Tiikma, Laine; Luik, Hans; Vink, Natalia; Bitjukov, MihhailWasteEng 2014 : 5th International Conference on Engineering for Waste and Biomass Valorisation, Rio de Janeiro, Brazil, August 25-28, 2014 : proceedings2014 / p. 252-259

Utilization solid waste as an additive in shale oil productionTiikma, Laine; Luik, Lea; Luik, Hans; Vink, Natalia; Bitjukov, MihhailWasteEng 2014 : 5th International Conference on Engineering for Waste and Biomass Valorisation, Rio de Janeiro, Brazil, August 25-28, 2014 : abstracts2014 / p. 53

Water conversion of dictyonema oil shale in the presence of reagentsŠarajeva, Galina; Palu, Vilja; Kruusement, Kristjan; Jurjeva, Jelena; Luik, LeaInternational oil shale symposium : Tallinn, Estonia, June 10-13, 20132013 / p. 68-69