TY  - JOUR
AU  - Nguyen Khanh Toan
TI  - Some new properties of surfaces of the second order in elliptic space
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 1959
SP  - 136
EP  - 144
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_1959_1_a12/
LA  - ru
ID  - IVM_1959_1_a12
ER  -