01146nas 2200373- 450 99635254780331620240112213020.0(OCoLC)1192488848(CKB)4100000011342764(CONSER)--2021221588(EXLCZ)99410000001134276420200731a20139999 --- -rusurunu||||||||txtrdacontentcrdamediacrrdacarrierIzvestii͡a vysshikh uchebnykh zavedeniĭPovolzhskiĭ regionEstestvennye naukiPenza :Penzenskiĭ gosudarstvennyĭ universitet,[2013]-1 online resourceRefereed/Peer-reviewed2307-9150 Povolzhskiĭ region.Estestvennye naukiSciencePeriodicalsSciencefast(OCoLC)fst01108176Periodicals.fastScienceScience.Penzenskiĭ gosudarstvennyĭ universitet,JOURNAL996352547803316Izvestii͡a vysshikh uchebnykh zavedeniĭ2078453UNISA