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@article{IM2_1970_4_6_a0, author = {A. V. Bitsadze}, title = {Mikhail {Alekseevich} {Lavrent'ev} (on the seventieth anniversary of his birth)}, journal = {Izvestiya. Mathematics }, pages = {1203--1206}, publisher = {mathdoc}, volume = {4}, number = {6}, year = {1970}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_1970_4_6_a0/} }
A. V. Bitsadze. Mikhail Alekseevich Lavrent'ev (on the seventieth anniversary of his birth). Izvestiya. Mathematics , Tome 4 (1970) no. 6, pp. 1203-1206. http://geodesic.mathdoc.fr/item/IM2_1970_4_6_a0/