TY  - JOUR
AU  - V. P. Maslov
AU  - V. E. Nazaikinskii
TI  - Asymptotics for equations with singularities in the characteristics
JO  - Izvestiya. Mathematics 
PY  - 1982
SP  - 315
EP  - 347
VL  - 19
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1982_19_2_a6/
LA  - en
ID  - IM2_1982_19_2_a6
ER  -