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"The Nobel Prize in Physics 1993". Nobel Foundation. 13 October 1993. Retrieved 22 December 2023. for the discovery of a new type of pulsar, a discovery that has opened up new possibilities for the study of gravitation
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Boynton, Richard (2001). "Precise Measurement of Mass"(PDF). Sawe Paper No. 3147. Arlington, Texas: S.A.W.E., Inc. Archived from the original(PDF) on 27 February 2007. Retrieved 22 December 2023.