@article {5350, title = {USE OF EFFECTIVE CORE POTENTIALS IN PERTURBATION CORRECTIONS TO THE KOOPMANS THEOREM - VERTICAL IONIZATION-POTENTIALS OF CL2,CLN3,AND CLNCO}, journal = {International Journal of Quantum Chemistry}, volume = {23}, number = {3}, year = {1983}, note = {ISI Document Delivery No.: QF841Times Cited: 11Cited Reference Count: 27}, pages = {875-886}, type = {Article}, isbn = {0020-7608}, url = {://A1983QF84100010}, author = {Langhoff, S. R. and Jaffe, R. L. and Chong, D. P.} }