Genetic Programming Second European Workshop, EuroGP'99, Göteborg, Sweden, May 26-27, 1999, Proceedings - Poli, Riccardo; Poli, Riccardo; Nordin, Peter; Nordin, Peter; Langdon, William B.; Langdon, William B.; Fogarty, Terence C.; Fogarty, Terence C. (Springer Berlin Heidelberg : Imprint: Springer, 1999)