Passive Step-Climbing Mechanism for a Mobility Aid. - Jin-Kyu Choi; Choong Sik Park; Takahiro Kitagawa; Kotaro Nakatani; Haruo Sugii (Adv. Robotics, 2009)

RNA tetraplex as a primordial peptide synthesis scaffold. - Takuya Umehara; Takahiro Kitagawa; Yu Nakazawa; Hinako Yoshino; Ryohei Nemoto; Koji Tamura (Biosyst., 2012)