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International Conference, том 1917 из LNCS, стр. 201--210. Paris, France, Springer Verlag, (16-20 September 2000)
W. Langdon. Proceedings of the Genetic and Evolutionary
Computation Conference (GECCO-2000), стр. 451--458. Las Vegas, Nevada, USA, Morgan Kaufmann, (10-12 July 2000)
W. Langdon. Proceedings of the Eleventh Belgium/Netherlands
Conference on Artificial Intelligence (BNAIC'99), стр. 255--256. Kasteel Vaeshartelt, Maastricht, Holland, (3-4 November 1999)
W. Langdon. Proceedings of the Genetic and Evolutionary
Computation Conference, 2, стр. 1092--1097. Orlando, Florida, USA, Morgan Kaufmann, (13-17 July 1999)
W. Langdon. SEN-R9907. Centrum voor Wiskunde en Informatica, CWI, P.O. Box 94079, Kruislaan 413, NL-1090 GB
Amsterdam, The Netherlands, (11 April 1999)