Yu. P. Krivenkov, “Sufficient optimality conditions for problems with second order differential equations of elliptic type in the presence of phase constraints”, Differ. Uravn., 1975, Volume 11, Number 1,Pages <nobr>85

Partial Differential Equations

Sufficient optimality conditions for problems with second order differential equations of elliptic type in the presence of phase constraints

Yu. P. Krivenkov

Moscow Institute of Physics and Technology

UDC: 517.946

Received: 08.07.1974