Pritzlaff, J. A. and Munske, R. E., "Manned Submersibles of the World,"Undersea Technology, ( August 1964).
2.
Picard, J. and Dietz, R. S., "Seven Miles Down,"G. P. Putnam's Sons, New York, ( 1961)
3.
Weiss, S. and Resnick, I., New York Naval Shipyard, Lab. Project 6411 , Progress Report 2 of ( 28 June 1963).
4.
Masim, W., Deep Water Plastic Floats, General Electric Technical Information Series. R62EMH12, (March 1962).
5.
Hinton, R. F., Tech. Note 4064-2 (12 December 1961), Moray TV-IA Buoyancy Material , NOTS, China Lake, California.
6.
Proteus, Inc.Properties of Buoyant Materials and Structures, (August 1964 ).
7.
Brown & Root Subcontract 63-45, Testing Syntactic Foam Buoyancy Materials, Inland Div., General Motors Corporation.
8.
NRL 6167 "Status and Projections of Developments in Hull Structural Materials for Deep Ocean Vehicles and Fixed Bottom Installations ,"W. S. Pellini, (November 1964).
9.
Hobaica, E. C."Buoyancy Systems for Deep Submergence Structures,"Naval Engineers Journal, (October 1964).
10.
Briggs, E. M. and DeHart, R. C., "Hydrostatic Buoyancy Creep Test of Certain Syntactic Foams,"Southwest Research Institute, (December, 1964).