@article{RM_1969_24_2_a4,
     author = {S. L. Sobolev and Yu. A. Shashkin},
     title = {Valentin {Konstantinovich} {Ivanov} (on his sixtieth birthday)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {185--191},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {1969},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1969_24_2_a4/}
}