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Lang, M.A.; Stewart, J.R., eds. (1992). AAUS Polar Diving Workshop Proceedings(PDF). United States: Scripps Institution of Oceanography, La Jolla, CA. p. 100.
Somers, Lee H. (1987). Lang, Michael A.; Mitchell, Charles T. (eds.). Training scientific divers for work in cold water and polar environments. 1987 AAUS - Cold Water Diving Workshop. Costa Mesa, California: American Academy of Underwater sciences. Archived from the original on October 7, 2008. Retrieved 21 December 2016.{{cite conference}}: CS1 maint: unfit URL (link)
Somers, Lee H. (1987). Lang, Michael A.; Mitchell, Charles T. (eds.). The under ice dive. 1987 AAUS - Cold Water Diving Workshop. Costa Mesa, California: American Academy of Underwater sciences. Archived from the original on October 7, 2008. Retrieved 21 December 2016.{{cite conference}}: CS1 maint: unfit URL (link)
