TY  - JOUR
AU  - V. A. Andrunakievich
AU  - N. P. Erugin
AU  - Yu. S. Bogdanov
TI  - Konstantin Sergeevi{\v{c}} Sibirski{\v\i} (on the occasion of his fiftieth birthday)
JO  - Differencialʹnye uravneniâ
PY  - 1978
SP  - 565
EP  - 570
VL  - 14
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1978_14_3_a25/
LA  - ru
ID  - DE_1978_14_3_a25
ER  -