000
00263nam a2200109 4500
008
160616s 000 0
245
_a
Systems of singular integral equations
100
_a
Vekua, N.P
500
_a
B33 K74
942
_c
BK
_2
BK4364
080
_a
517.968 VEK
999
_c
4364
_d
4364