A review on basic methods of extraction of neutral oxygen compounds from shale oil, their composition and propertiesKekiševa, Ljudmilla; Krainjukova, N.; Žirjakov, Jüri; Soone, JüriOil shale2004 / 2, p. 173-178

Combined retorting of oil shale and ligniteSoone, Jüri; Doilov, Svjatoslav; Kaev, Mihhail; Kekiševa, LjudmillaInternational Oil Shale Symposium : Tallinn, Estonia, June 8-11, 2009 : future energy solutions : come and share your vision!2009 / p. 76 http://www.ester.ee/record=b4775098*est

Environmentally sustainable use of the energy and chemical potential of oil shaleSoone, Jüri; Riisalu, Hella; Kekiševa, Ljudmilla; Doilov, SvjatoslavOil shale conference "Recent Trends in Oil Shale : Research and Applications" : Amman, Jordan, November 7-9, 20062006 / ? p

Investigations into methods of purification fom nitrogen compounds of phenolic waters of the Kiviter processKekiševa, Ljudmilla; Grigorjeva, Larissa; Ostroukhov, N.; Petrovich, N.; Riisalu, Hella; Soone, JüriInternational Oil Shale Symposium : Tallinn, Estonia, June 8-11, 2009 : future energy solutions : come and share your vision!2009 / p. 85 http://www.ester.ee/record=b4775098*est

Põlevkivi mineraalosa mõju raske naftajäätme ja põlevkivi madalatemperatuurilisele koospürolüüsileKrotov, I.; Soone, Jüri; Sitnik, Viktor; Kekiševa, LjudmillaXXIX Eesti keemiapäevad : teaduskonverentsi ettekannete teesid = 29th Estonian Chemistry Days : abstracts of scientific conference2005 / lk. 45-46

Studies of oil shale properties variation in El Lajjun (Jordan) boreholeRiisalu, Hella; Anijalg, Andres; Doilov, Svjatoslav; Kekiševa, Ljudmilla; Muoni, Rein; Soone, JüriInternational Oil Shale Symposium : Tallinn, Estonia, June 8-11, 2009 : future energy solutions : come and share your vision!2009 / p. 99-100 http://www.ester.ee/record=b4775098*est

The influence of phenols and other compounds on chemical oxygen demand (COD) of phenolic waters from the Kiviter processKekiševa, Ljudmilla; Smirnov, I.; Ostroukhov, N.; Petrovich, N.; Sitnik, Viktor; Riisalu, Hella; Soone, JüriOil shale2007 / 4, p. 573-581 : ill https://artiklid.elnet.ee/record=b2376564*est

Tire processing using pyrolysis and hydrogenation methodsPihl, Olga; Soone, Jüri; Kekiševa, Ljudmilla; Kaev, MihkelSolid fuel chemistry2013 / p. 183-192 https://doi.org/10.3103/S0361521913030063

Wastewater treatment in oil shale chemical industryKamenev, Inna; Munter, Rein; Pikkov, Lui; Kekiševa, LjudmillaOil shale2003 / 4, p. 443-457 : ill

Сланцевые алкилрезорцины - ингредиенты химикатов для резиновых смесей и гетероцепных полимеровGrigoryeva, L.; Žirjakov, Jüri; Kekiševa, Ljudmilla; Soone, JüriOil shale2000 / 3, p. 287-298 https://artiklid.elnet.ee/record=b1005012*est

Смолы и модификаторы полифункционального действия на основе сланцевых алкилрезортсиновGrigoryeva, L.; Zirjakov, J.; Kekiševa, Ljudmilla; Soone, JüriНаучно-информационный сборник "Простор". 82000 / с. 32-43

Сульфидирование концентратов 5-метилрезорцина элементной серойKekiševa, Ljudmilla; Grigorjeva, Larissa; Soone, Jüri; Riisalu, HellaХимия твердого топлива2007 / 4, с. 9-12

Сульфидирование суммарных сланцевых водорастворимых фенолов элементной серойKekiševa, Ljudmilla; Grigorjeva, Larissa; Soone, Jüri; Riisalu, HellaХимия твердого топлива2007 / 4, с. 13-17