A. Miles, B. Matthews, M. Wilson, and D. Brickley. Proceedings of the 2005 international conference on Dublin Core and metadata applications, page 1--9. Madrid, Spanien, Dublin Core Metadata Initiative, (2005)
K. Crawford, M. McCormack, and D. MacAllister. Proceedings of the Genetic and Evolutionary
Computation Conference, 2, page 1498--1503. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)