@article {Zumberge1991,
	title = {{A submarine measurement of the Newtonian gravitational constant}},
	journal = {Physical Review Letters},
	volume = {67},
	number = {22},
	year = {1991},
	pages = {3051{\textendash}3054},
	issn = {0031-9007},
	doi = {10.1103/PhysRevLett.67.3051},
	url = {http://dx.doi.org/10.1103/PhysRevLett.67.3051},
	author = {Zumberge, M A and Hildebrand, J A and Stevenson, J M and Parker, R L and Chave, A D and Ander, M E and Spiess, F N}
}
@inbook {Spiess1980a,
	title = {{Some origins and perspectives in deep ocean instrumentation development}},
	booktitle = {Oceanography, the past},
	year = {1980},
	pages = {226{\textendash}239},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {New York, N.Y.},
	isbn = {0387904972},
	author = {Spiess, F N},
	editor = {Sears, M}
}
