TY  - JOUR
AU  - V. F. Butuzov
TI  - The angular boundary layer in mixed singularly perturbed problems for hyperbolic equations
JO  - Sbornik. Mathematics
PY  - 1977
SP  - 403
EP  - 425
VL  - 33
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1977_33_3_a5/
LA  - en
ID  - SM_1977_33_3_a5
ER  -