A direct method for modifying certain phase-integral approximations of arbitrary order

JWKB approximation: Contributions to the theory

L.B. Felsen · Journal of the Franklin Institute · 1966 · 256 citations

Natural Sciences, Mathematics, Physics +7

Connection formulas for certain higher order phase-integral approximations

Nanny Fröman · Annals of Physics · 1970 · 115 citations

Natural Sciences, Mathematics, Physics +5

Computation of a class of functions useful in the phase-integral approximation. I. Results

J. A. Campbell · Journal of Computational Physics · 1972 · 89 citations

Natural Sciences, Physics, Computational Physics +10

Transmission through a real potential barrier treated by means of certain phase-integral approximations

Nanny Fröman, Per Olof Fröman · Nuclear Physics A · 1970 · 82 citations

Natural Sciences, Electrical Engineering, Condensed Matter Physics +6

Application of a Higher-Order WKB Approximation to Radial Problems

J. B. Krieger, C. Rosenzweig · Physical Review · 1967 · 59 citations

Natural Sciences, Physics, Computational Physics +9