Van Straten, W.; Bailes, M.; Britton, M.; Kulkarni, S. R.; et al. (2001). "A test of general relativity from the three-dimensional orbital geometry of a binary pulsar". Nature. 412 (6843): 158–160. arXiv:astro-ph/0108254. Bibcode:2001Natur.412..158V. doi:10.1038/35084015. PMID 11449265. S2CID 4363384.