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Variational methods in engineering problems and in problems of mathematical physics. (Variacni metody v inzenyrskych problemech a v problemech matematicke fyziky.). (Czech) Zbl 0371.35001
Teoreticka Kniznice Inzenyra. Praha: SNTL - Nakladatelsvi Technicke Literatury. 600 p. Kcs 67.00 (1974).

35-01 Introductory exposition (textbooks, tutorial papers, etc.) pertaining to partial differential equations