Variational principle for equations integrable by the inverse problem method. (English. Russian original) Zbl 0473.35075
Funct. Anal. Appl. 14, 43-44 (1980); translation from Funkts. Anal. Prilozh. 14, No. 1, 55-56 (1980).
Keywords:
system of nonlinear equations representing the conditions for compatibility of two linear differential equations; inverse problemsReferences:
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