@article{9267, author = {C. Speake and T. Quinn}, title = {A search for composition-dependent gravity using a beam balance}, year = {1989}, journal = {IEEE Transactions on Instrumentation and Measurement}, volume = {38}, pages = {189-195}, month = {Jan-04-1989}, issn = {00189456}, url = {http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=192270}, doi = {10.1109/19.192270}, }