PCM-FDM System for Existing Microwave Radio Baseband. - K. Watanabe; K. Ogawa; T. Endo; T. Wakahara (IEEE Trans. Commun., 1976)

State of the art of handwritten numeral recognition in Japan-The results of the first IPTP character recognition competition. - T. Matsui; T. Noumi; I. Yamashita; T. Wakahara; M. Yoshimuro (ICDAR, 1993)