TY  - JOUR
AU  - V. N. Rybakov
TI  - Quasi-normal families of surfaces on congruences of lines and circles
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1960
VL  - 15
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1960_15_5_a16/
LA  - ru
ID  - RM_1960_15_5_a16
ER  -