TY  - JOUR
AU  - P. A. Shvartsman
TI  - Analytic properties of a positively directed symplectic curve in the neighborhood of a branch point of its spectrum
JO  - Doklady Akademii Nauk
PY  - 1968
SP  - 1273
EP  - 1275
VL  - 183
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1968_183_6_a9/
LA  - ru
ID  - DAN_1968_183_6_a9
ER  -