Physics Letters A · 1982 · 19 citations · 1 references
Natural SciencesMathematicsPhysicsDifferential EquationsMathematical PhysicsTheoretical PhysicsOperator TheoryPerturbation MethodsPerturbation TheoryQuantum DynamicsQuantum OperatorsSchrödinger EquationEigenfunction ExpansionsPerturbation Of Linear OperatorsPerturbation Of Nonlinear Differential EquationsPerturbation Theory Of OperatorsVariational Perturbation Theory
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