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Dyfyniad Arddull ChicagoInternational Conference on Petroleum Chemistry Tomsk, Russia, Institut khimii nefti (Akademi︠i︡a nauk SSSR), Nauchnyĭ sovet po neftekhimii (Akademi︠i︡a nauk SSSR), and F. G. Unger. Mezhdunarodna︠i︡a Konferen︠t︡si︠i︡a Po Khimii Nefti, 1-4 Okt︠i︡abr︠i︡a 1991 G.: Tezisy Dokladov. Tomsk: Tomskiĭ nauch. ︠t︡sentr SO AN SSSR, 1991.
Dyfyniad MLAInternational Conference on Petroleum Chemistry Tomsk, Russia, et al. Mezhdunarodna︠i︡a Konferen︠t︡si︠i︡a Po Khimii Nefti, 1-4 Okt︠i︡abr︠i︡a 1991 G.: Tezisy Dokladov. Tomskiĭ nauch. ︠t︡sentr SO AN SSSR, 1991.