TY  - JOUR
AU  - Yu. F. Borisov
TI  - A half-neighborhood and the variation of length of a curve on a surface
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1965
SP  - 26
EP  - 48
VL  - 76
UR  - http://geodesic.mathdoc.fr/item/TM_1965_76_a2/
LA  - ru
ID  - TM_1965_76_a2
ER  -