George Rosen."February 10, 1960." "Submitted to the Department of Electrical Engineering, M.I.T., January 25, 1960, in partial fulfillment of the requirements for the Doctor of Science."Bibliography: p. 86-88.Army Signal Corps Contract DA36-039-sc-78108 Dept. of the Army Task 3-99-20-001 and Project 3-99-00-000. Air Force Contract AF19(604)-6102.