References for Otto Hölder

1. E Holder, Biography in Dictionary of Scientific Biography (New York 1970-1990).
   http://www.encyclopedia.com/doc/1G2-2830902035.html

Books:

2. J J Nicholson, Otto Holder and the Development of Group Theory and Galois Theory (Ph.D. Thesis Oxford, 1993).

Articles:

3. J J Gray, Otto Hölder and Group Theory, The Mathematical Intelligencer 16 (3) (1994), 59-61.
4. J J Nicholson, The development and understanding of the concept of a quotient group, Historia Mathematica 20 (1993), 68-88.
5. B L van der Waerden, Nachruf auf Otto Hölder, Mathematische Annalen 116 (1939),157-165.

August 1997