Two-dimensional extremal surfaces with jointly extremal partial derivatives

V. I. Bernik, É. I. Kovalevskaya

Institute of Mathematics, Academy of Sciences Byelorussian SSR

UDC: 511.36

Received: 07.03.1988
Revised: 21.02.1991

 English version: Mathematical Notes, 1991, 50:2, 779–783

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