Duke Mathematical Journal · 1977 · 1.3K citations · 0 references
Natural SciencesMathematicsPhysicsDifferential EquationsMathematical PhysicsTheoretical PhysicsBoundary ConditionsFourier AnalysisFourier OpticsGreen's FunctionsPhysical OpticsWave FunctionsAsymptotic Boundary ConditionsFourier Analysis Of WavesFourier Representation Of WavesFourier Transform TheoryHelmholtz EquationWave Equation ExpansionsWave Equations