Borbély, A. A.; Hall, Robert D.; Chamberlain, S. C.; Moxon, E. C.; Wiederhold, M. L.; Hellekant, G.(Research Laboratory of Electronics (RLE) at the Massachusetts Institute of Technology (MIT), 1968-07-15)
Hirschfeld, L. J.; Troxel, Donald E.; Spencer, D. R.; Huang, T. S.(Research Laboratory of Electronics (RLE) at the Massachusetts Institute of Technology (MIT), 1968-07-15)
Van Trees, Harry L., Jr.; Baggeroer, Arthur B.; Collins, L. D.; Kurth, R. R.; Cruise, T. J.(Research Laboratory of Electronics (RLE) at the Massachusetts Institute of Technology (MIT), 1968-07-15)