TY  - JOUR
AU  - V. I. Korzyuk
AU  - I. S. Kozlovskaja
AU  - S. N. Naumavets
TI  - Statement of border tasks on the plane dependent on the coefficients for the type of the wave equation.~I
JO  - Trudy Instituta matematiki
PY  - 2019
SP  - 29
EP  - 36
VL  - 27
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TIMB_2019_27_1_a3/
LA  - ru
ID  - TIMB_2019_27_1_a3
ER  -