• Applying the correction for undecomposed carbonates to gross calorific values of oil shales from different depositsPihl, Olga; Tšepelevitš, Maria; Burko, Maria; Siirde, AndresOil shale2019 / p. 250–256 : ill http://www.kirj.ee/public/oilshale_pdf/2019/issue_2S/OS-2019-2S-250-256.pdf https://doi.org/10.3176/oil.2019.2S.13 https://www.scopus.com/sourceid/17080 https://www.scopus.com/record/display.uri?eid=2-s2.0-85070504985&origin=inward&txGid=71d03c3d818837b46013fe853197a639 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=OIL%20SHALE&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000470019100013
• Gas-chromatographic determination of sulfur compounds in the gasoline fractions of shale oil and oil obtained from used tiresPihl, Olga; Niidu, Allan; Merkulova, Nadežda; Fomitšov, Mihhail; Siirde, Andres; Tšepelevitš, MariaOil shale2019 / p. 188–196 : ill http://www.kirj.ee/public/oilshale_pdf/2019/issue_2S/OS-2019-2S-188-196.pdf https://doi.org/10.3176/oil.2019.2S.09 https://www.scopus.com/sourceid/17080 https://www.scopus.com/record/display.uri?eid=2-s2.0-85070493398&origin=inward&txGid=5027fb58435469f19f368e448658ac76 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=OIL%20SHALE&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000470019100009
• Põlevkivi [Võrguteavik] : niiskuse määramine = Oil shale : determination of moisture2018 https://www.ester.ee/record=b4816504*est
• Põlevkiviõli fraktsioonide rühmalise koostise uuring olenevalt tahke soojuskandjaga seadme TSS-3000 tehnoloogilisest režiimistVetkov, Nikolai; Žirjakov, Jüri; Tšepelevitš, MariaXXIX Eesti keemiapäevad : teaduskonverentsi ettekannete teesid = 29th Estonian Chemistry Days : abstracts of scientific conference2005 / lk. 132-133 : ill
• Põlevkiviõlid [Võrguteavik] : tahkete lisandite ja tuhasuse määramise meetod = Shale oils : method for determination of sediment content and ash2020 https://www.ester.ee/record=b5366046*est