Siberian Mathematical Journal · 1977 · 20 citations · 3 references
Natural SciencesMathematicsDifferential EquationsBoundary ConditionsExistence TheoryPartial Differential EquationsSystems Of Differential EquationsVariational FormulationCharacteristic EquationElliptic Boundary-value ProblemsElliptic Partial Differential EquationsSecond-order Differential EquationsWeak Solutions
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