P.R. Swan, Jr., M.W.P. Strandberg., "March 22, 1956"--Cover. "Reprinted from Journal of molecular spectroscopy, volume 1, no. 4, December, 1957.", Bibliography: p. 378., Army Signal Corps Contract DA36-039-sc-64637 Dept. of the Army Task 3-99-06-108 Project 3-99-00-100