Detection of rings around Uranus, R. L. Millis, L. H. Wasserman, and P. V. Birch, Nature267 (May 26, 1977), pp. 330–331. Abstract at ADSABS (页面存档备份,存于互联网档案馆)
Detection of rings around Uranus, R. L. Millis, L. H. Wasserman, and P. V. Birch, Nature267 (May 26, 1977), pp. 330–331. Abstract at ADSABS (页面存档备份,存于互联网档案馆)