Boundary value problems for second order_ elliptic equations .
A V Bitsadze
Boundary value problems for second order_ elliptic equations . - New york A : merican Elsevie, 1968
(north Holend series in applied mathematics a
515.353, BIT
Boundary value problems for second order_ elliptic equations . - New york A : merican Elsevie, 1968
(north Holend series in applied mathematics a
515.353, BIT