TY - JOUR AU - A. Hernández AU - P. Langhoff BT - Chemical Physics Letters DA - 1977-08 DO - 10.1016/0009-2614(77)87006-1 PY - 1977 SP - 421 EP - 426 T2 - Chemical Physics Letters TI - On Rayleigh-Schrödinger and green's-function calculations of ionization potentials and electron affinities UR - http://linkinghub.elsevier.com/retrieve/pii/0009261477870061 VL - 49 SN - 00092614 ER -