by David H. Douglass, Jr. and M.W.P. Strandberg.
"September 1, 1961." "Reprinted from Physica, vol. 27, pp. 1-17, 1961."
Bibliography: p. 17.
Army Signal Corps Contract No. W-36-039-sc-78108. Dept. of the Army Task 3-99-20-001 and Project 3-99-00-000. Army Signal Corps Contract DA36-039-sc-87376.