M. I. Vishik, L. A. Lyusternik, “On some even order elliptic equations containing small parameters in higher derivative terms and degenerating into equations of order one or, generally, of an odd order”, Dokl. Akad. Nauk SSSR, 1957, Volume 113, Number 5,Pages <nobr>962

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MATHEMATICS

On some even order elliptic equations containing small parameters in higher derivative terms and degenerating into equations of order one or, generally, of an odd order

M. I. Vishik, L. A. Lyusternik

Received: 03.02.1957