Lavrentʹev, M. A. (1962). Varia︠t︡sionnyĭ metod v kraevykh zadachakh dl︠i︡a sistem uravneniĭ ėllipticheskogo tipa. Izd-vo Akademi︠i︡a nauk SSSR.
Chicago Style (17th ed.) CitationLavrentʹev, Mikhail Alekseevich. Varia︠t︡sionnyĭ Metod V Kraevykh Zadachakh Dl︠i︡a Sistem Uravneniĭ ėllipticheskogo Tipa. Moskva: Izd-vo Akademi︠i︡a nauk SSSR, 1962.
MLA (8th ed.) CitationLavrentʹev, Mikhail Alekseevich. Varia︠t︡sionnyĭ Metod V Kraevykh Zadachakh Dl︠i︡a Sistem Uravneniĭ ėllipticheskogo Tipa. Izd-vo Akademi︠i︡a nauk SSSR, 1962.
Warning: These citations may not always be 100% accurate.