TY  - JOUR
AU  - A. M. Il'in
AU  - E. F. Lelikova
TI  - A~method of joining asymptotic expansions for the equation $\varepsilon\Delta u-a(x,y)u_y=f(x,y)$ in a~rectangle
JO  - Sbornik. Mathematics
PY  - 1975
SP  - 533
EP  - 548
VL  - 25
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1975_25_4_a4/
LA  - en
ID  - SM_1975_25_4_a4
ER  -