TY  - BOOK
AU  - Bit͡sadze,A.V.
TI  - Equations of the mixed type
U1  - 517.383 
PY  - 1964///
CY  - Oxford, New York
PB  - Pergamon Press; [distributed in the Western Hemisphere by Macmillan, New York]
KW  - Differential equations, Partial
N1  - Bibliography: p. 151-156
ER  -