PROBLEMS WITH IPA LATTER TAIL POTENTIALS IN NEUTRAL AND IONIC PHOTOEFFECT CALCULATIONS Y. KUANG, R.H. PRATT, Y.-J. WU, J. STEIN, I.B. GOLDBERG et A. RON J. Phys. Colloques, 48 C9 (1987) C9-527-C9-530 DOI: 10.1051/jphyscol:1987986