TY  - BOOK
AU  - Bitsadze, A. V.
AU  - Zador, P.
TI  - EQUATIONS OF THE MIXED TYPE
U1  - 517.383 
PY  - 1964///
CY  - N. Y.
PB  - Macmillan
KW  - Differentialequations, Partial
N1  - A Pergamon Press Book
ER  -