01045nas 2200373 a 450 991014725990332120241223110748.01608-3083(OCoLC)47189610(CKB)954926941724(CONSER) 2008233645(DE-599)ZDB2031092-4(MiAaPQ)54032(MiFhGG)5HLD(EXLCZ)9995492694172420010625a19659999 sy aengurmnu|||||txtrdacontentcrdamediacrrdacarrierDifferential equations[Moscow, Russia] MAIK Nauka/InterperiodicaRefereed/Peer-reviewed0012-2661 Differential equationsPeriodicalsÉquations différentiellesPériodiquesDifferential equationsÉquations différentielles515.35JOURNAL9910147259903321Differential equations82801UNINA