@article{DE_1990_26_7_a22,
     author = {V. A. Il'in and A. A. Samarskii},
     title = {Aleksandr {Andreevich} {Shestakov} (on the occasion of his 70th birthday)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1280--1283},
     publisher = {mathdoc},
     volume = {26},
     number = {7},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_7_a22/}
}