
 References for Zermelo (Site not responding. Last check: 20071105) 
  G Heinzmann (ed.), Poincare, Russell, Zermelo et Peano : textes de la discussion (19061912) sur les fondements des mathématiques : des antinomies a la predicativite (Paris, 1986). 
  G H Moore, Zermelo's axiom of choice : its origins, development, and influence (New York, 1982). 
  G H Moore, Ernst Zermelo, A E Harward, and the axiomatization of set theory, Historia Mathematica 3 (2) (1976), 206209. 
 wwwhistory.mcs.standrews.ac.uk /history/References/Zermelo.html (82 words) 
