d├ębat Shapley-Curtis

[1976] The 'Great Debate': What Really Happened ; M. A. Hoskin ; Journal for the History of Astronomy 7 (1976) p. 169 [lien]
[1976] The 'Great Debate': What Really Happened ; M. A. Hoskin ; Journal for the History of Astronomy 7 (1976) p. 169 [lien]
[1990] Through Rugged Ways to Galaxies ; O. Gingerich ; Journal for the History of Astronomy 21 (1990) p. 77 [lien]
[1995] The 1920 Shapley-Curtis Discussion: Background, Issues, and Aftermath ; Virginia Trimble ; PASP 107 (1995) p. 1133 [lien]
[1995] The 1920 Shapley-Curtis Discussion: Background, Issues, and Aftermath ; Virginia Trimble ; PASP 107 (1995) p. 1133 [lien]