@article{DE_1973_9_8_a23,
     author = {S. N. Mergelyan and I. M. Gel'fand and O. A. Oleinik},
     title = {Rafa\`el' {Aramovi{\v{c}}} {Aleksandrjan} (on the occasion of his fiftieth birthday)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1543--1546},
     publisher = {mathdoc},
     volume = {9},
     number = {8},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_8_a23/}
}