Dean: Prof. Dr. Claus R. Bartram
Referee: Prof. Dr. Sándor Suhai
Some of the illustrations and parts of the text in this thesis also appeared in the publications Chevreux et al. (1999), Chevreux et al. (2000) and Chevreux et al. (2004).
Avid readers of David Gerrold will certainly recognise the quotes from his books at the beginning of each chapter of this thesis.