TY  - JOUR
AU  - A. Dzhuraev
TI  - On a method of investigating systems of first-order equations in three-dimensional space
JO  - Doklady Akademii Nauk
PY  - 1975
SP  - 1052
EP  - 1055
VL  - 223
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1975_223_5_a3/
LA  - ru
ID  - DAN_1975_223_5_a3
ER  -