Partial Differential Equations V: Asymptotic Methods for Partial Differential Equations
Fedoryuk, M. V ; Joel, J. S ; Babich, V. M ; Wolf, S. A ; Bakhvalov, N. S ; Il'in, A. M ; Lazutkin, V. F ; Panasenko, G ; Shtaras, A. L ; Vainberg, B. R Fedoryuk, M. V.
Berlin, Heidelberg: Springer Berlin / Heidelberg 1998
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