@article{DE_1983_19_4_a32,
     author = {N. P. Erugin and E. A. Ivanov and S. M. Nikol'skii and A. A. Samarskii and A. N. Tikhonov},
     title = {Lev {Dmitrievich} {Kudryavtsev} (on the occasion of his sixtieth birthday)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {724--728},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_4_a32/}
}