11. Horn, K. and Blumenberg, W. F., "Hydrostatic Tests' of Structural 

 Models for Preliminary Design of a Web-Stiffened Sandwich Pressure Hull," 

 David Taylor Model Basin Report 1763, September 1963. 



12. Picard, J. and Dietz, R. S., "Seven Miles Down," Putnam, 1961. 



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