Kundic, T.; Turner, E.L.; Colley, W.N.; Gott, III; Rhoads, J.E. (1997). “A robust determination of the time delay in 0957+561A,B and a measurement of the global value of Hubble's constant”. Astrophys. J. 482 (1): 75–82. arXiv:astro-ph/9610162. Bibcode:1997ApJ...482...75K. doi:10.1086/304147.
doi.org
Kundic, T.; Turner, E.L.; Colley, W.N.; Gott, III; Rhoads, J.E. (1997). “A robust determination of the time delay in 0957+561A,B and a measurement of the global value of Hubble's constant”. Astrophys. J. 482 (1): 75–82. arXiv:astro-ph/9610162. Bibcode:1997ApJ...482...75K. doi:10.1086/304147.
harvard.edu
ui.adsabs.harvard.edu
Kundic, T.; Turner, E.L.; Colley, W.N.; Gott, III; Rhoads, J.E. (1997). “A robust determination of the time delay in 0957+561A,B and a measurement of the global value of Hubble's constant”. Astrophys. J. 482 (1): 75–82. arXiv:astro-ph/9610162. Bibcode:1997ApJ...482...75K. doi:10.1086/304147.