Variable length segmental-transmission-line and its parameter optimization based on GA. - Naoki Koizumi; Ikuo Yoshihara; Kunihito Yamamori; Moritoshi Yasunaga (Congress on Evolutionary Computation, 2005)

Enhancement of the Variable-Length-Transmission-Line design method for multi-point optimization. - Naoki Koizumi; Ikuo Yoshihara; Kunihito Yamamori; Moritoshi Yasunaga (IEEE Congress on Evolutionary Computation, 2006)

The Segmental-Transmission-Line: Its Design and Prototype Evaluation. - Moritoshi Yasunaga; Yoshiki Yamaguchi; Hiroshi Nakayama; Ikuo Yoshihara; Naoki Koizumi; Jung Hwan Kim (ICES, 2008)

Variable-length segmental transmission line and its design guidelines. - Naoki Koizumi; Kazuya Hayashi; Moritoshi Yasunaga; Kunihito Yamamori; Ikuo Yoshihara (Artif. Life Robotics, 2008)