Parametric theory of Δu+k 2 u=0

Asymptotic solution of some diffraction problems

1956 • 196 citations

Journal of Rational Mechanics and Analysis

1953 • 158 citations

A generalization of theorems of Rellich and Atkinson

1956 • 136 citations

The First Boundary Value Problem for εΔu + A(x, y)u x + B(x, y)u y + C(x, y)u = D(x, y) for Small ε

1950 • 98 citations

Quantum mechanics and asymptotic series

1933 • 85 citations

Asymptotic solution of boundary value problems for the differential equation ΔU+λ∂∂xU=λf(x,y)

1944 • 26 citations

Asymptotic Solution of Linear Hyperbolic Partial Differential Equations

1954 • 13 citations

�ber die asymptotische integration partieller Differential-gleichungen mit parameter

1922 • 2 citations

�ber die asymptotische Integration partieller Differentialgleichungen mit Parameter

1922 • 1 citations