TY  - JOUR
AU  - N. A. Lyul'ko
TI  - The increasing smoothness property of solutions to some hyperbolic problems in two independent variables
JO  - Sibirskie èlektronnye matematičeskie izvestiâ
PY  - 2010
SP  - 413
EP  - 424
VL  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SEMR_2010_7_a39/
LA  - en
ID  - SEMR_2010_7_a39
ER  -