TY  - JOUR
AU  - V. V. Katrakhov
AU  - S. M. Sitnik
TI  - A composition method for constructing $B$-elliptic, $B$-hyperbolic
JO  - Doklady Akademii Nauk
PY  - 1994
SP  - 307
EP  - 311
VL  - 337
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1994_337_3_a4/
LA  - ru
ID  - DAN_1994_337_3_a4
ER  -