Doel, R.E.; Levin, T.J.; Marker, M.K. (2006). «Extending modern cartography to the ocean depths: military patronage, Cold War priorities, and the Heezen-Tharp mapping project, 1952-1959». Journal of Historical Geography. 32 (3): 605–626. doi:10.1016/j.jhg.2005.10.011