Tham khảo Sao_xung_đôi

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  2. Taylor, J. H.; Weisberg, J. M. (1982). “A new test of general relativity - Gravitational radiation and the binary pulsar PSR 1913+16”. Astrophysical Journal. 253: 908–920. Bibcode:1982ApJ...253..908T. doi:10.1086/159690.