00630naa#a2200205#i#450# EN\\bibl\112948 20260317015257.2 2311-1402 20140625b2014####ek#y0engy0150####ca RUS RU Development of oil and gas complex in Russia in 1990s Journal article Nizhnevartovsk Nizhnevartovsk State University 2014 4 с. Journal article local . 94(47).08:338.45 RUS Bodrova Elena Vladimirovna Gusarova Maria Nikolaevna Kalinov Viacheslav Viktorovich nvsu.editorum.ru