@article{DE_1968_4_9_a19,
     author = {A. A. Dezin and N. P. Erugin and L. D. Kudryavtsev},
     title = {Serge\u{i} {L'vovich} {Sobolev} (on his 60th birthday)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1724--1730},
     publisher = {mathdoc},
     volume = {4},
     number = {9},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_9_a19/}
}