TY  - JOUR
AU  - L. N. Lyapin
TI  - Set-valued mappings in the theory of integral equations with a discontinuous operator
JO  - Differencialʹnye uravneniâ
PY  - 1973
SP  - 1511
EP  - 1519
VL  - 9
IS  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1973_9_8_a14/
LA  - ru
ID  - DE_1973_9_8_a14
ER  -