TY  - JOUR
AU  - V. I. Zhegalov
AU  - A. N. Mironov
TI  - Three-dimensional characteristic problems with normal derivatives in boundary conditions
JO  - Differencialʹnye uravneniâ
PY  - 2000
SP  - 833
EP  - 836
VL  - 36
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2000_36_6_a16/
LA  - ru
ID  - DE_2000_36_6_a16
ER  -