TY  - JOUR
AU  - N. N. Nefedov
TI  - Two-dimensional contrast structures of step type: asymptotics,
JO  - Doklady Akademii Nauk
PY  - 1996
SP  - 603
EP  - 605
VL  - 349
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1996_349_5_a6/
LA  - ru
ID  - DAN_1996_349_5_a6
ER  -