EFFECTIVE RANGE THEORY AND MANY-BODY PERTURBATION THEORY APPLIED TO ELECTRON SPIN-POLARIZED ATOMIC HYDROGEN (H+) Y. H. Uang et W. C. StwalleyJ. Phys. Colloques, 41 C7 (1980) C7-33-C7-38DOI: https://doi.org/10.1051/jphyscol:1980706