@book {723,
	title = {{Design and process control specification, 6 A1-4 V titanium alloy spherical buoyancy vessel, No. 90-000011, Rev. B}},
	year = {1965},
	publisher = {Pressure Systems, Inc},
	organization = {Pressure Systems, Inc},
	address = {Hampton, Va.},
	keywords = {HOV Alvin (Human Occupied Vehicle)}
}
