ERNEST R. DAVIDSON
Rev. Mod. Phys. 44, 451 (1972) - Published 1 July, 1972
HANS-DIETER BETZ
Rev. Mod. Phys. 44, 465 (1972) - Published 1 July, 1972
JAMES D. LOUCK and HAROLD W. GALBRAITH
Rev. Mod. Phys. 44, 540 (1972) - Published 1 July, 1972
P. W. LANGHOFF, S. T. EPSTEIN, and M. KARPLUS
Rev. Mod. Phys. 44, 602 (1972) - Published 1 July, 1972