Integral and expansion techniques for transforming Hylleraas-type wave functions to momentum space
Robert Benesch and Samuel Thomas
Phys. Rev. A 19, 931 (1979) - Published 1 March, 1979
Accurate calculations for the even-parity core-excited states of neutral Li
Carlos F. Bunge
Phys. Rev. A 19, 936 (1979) - Published 1 March, 1979