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Citation: M. Galimov E et al., Isotope geochemistry and the sources of oil accumulation in the solikmask depression, Geochemistry international , 28(5), 1991, pp. 53-61

Authors: GALIMOV E M FRIK M G KOBLOVA A Z SHNEYE V D TITOVA G I PROKHOROV V S

Citation: M. Galimov E et al., Geochemical prognosis of the oil and gas prospects of the upper Kama depression, Geochemistry international , 27(8), 1990, pp. 75-81

Authors: PRASOLOV E M SUBBOTIN Ye S KOBLOVA A K FRIK M G NIGMATULLINA F S

Citation: M. Prasolov E et al., Nitrogen-isotope composition of oils from the northeast Volga-Ural petroliferous province, Geochemistry international , 29(6), 1992, pp. 79-88

Authors: FRIK M G KOBLOVA A Z PETROV A A

Citation: G. Frik M et al., Steranes and hopanes in oils of the northeast Volga-Ural petroleum province, Geochemistry international , 28(7), 1991, pp. 142-147