John, M. R. (1990). Lecture notes on mixed type partial differential equations. World scientific.
Trích dẫn kiểu ChicagoJohn, M. Rassias. Lecture Notes On Mixed Type Partial Differential Equations. World scientific, 1990.
MLA citiranjeJohn, M. Rassias. Lecture Notes On Mixed Type Partial Differential Equations. World scientific, 1990.
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