TY  - JOUR
AU  - K. Orlov
TI  - Some theorems concerning partial differential equations
JO  - Matematički vesnik
PY  - 1977
SP  - 73 
VL  - 29
IS  - 1
UR  - http://geodesic.mathdoc.fr/item/MV_1977_29_1_a9/
ID  - MV_1977_29_1_a9
ER  -