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Author: M. M. Smirnov
Title: Equations of mixed type
Additional book information: Transl. Math. Monographs, Vol. 51, American Mathematical Society, Providence, R. I., 1978, iii + 232 pp., $27.20.
Reviewer: Murray H. Protter
Journal: Bull. Amer. Math. Soc. 1 (1979), 534-538