@book {Waterman1967,
	title = {{Hydrostatic creep tests of a 6A1-4V titanium sphere for Alvin}},
	series = {Naval Ship Research and Development Center (NSRDC) Report},
	year = {1967},
	pages = {25},
	publisher = {Naval Ship Research and Development Center},
	organization = {Naval Ship Research and Development Center},
	address = {Bethesda, Md.},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	author = {Waterman, R L and Humphries, P E}
}
@book {Humphries1967,
	title = {{Hydrostatic tests of a 6A1-4V titanium buoyancy sphere for Alvin}},
	series = {Report},
	year = {1967},
	publisher = {David Taylor Model Basin},
	organization = {David Taylor Model Basin},
	address = {Bethesda, Md.},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	author = {Humphries, P E}
}
