Yoshiko HanadaNagahiro HosokawaKeiko OnoMitsuji MuneyasuEffectiveness of Multi-step Crossover Fusions in genetic programming.1-82012IEEE Congress on Evolutionary Computationhttps://doi.org/10.1109/CEC.2012.6256564conf/cec/2012db/conf/cec/cec2012.html#HanadaHOM12