S. Maxwell III. Proceedings of the 1994 IEEE World Congress on
Computational Intelligence, 1, Seite 413--417a. Orlando, Florida, USA, IEEE Press, (27-29 June 1994)
B. Maxwell, und S. Anderson. Proceedings of the Genetic and Evolutionary
Computation Conference, 1, Seite 944. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)