Ability to cough can be evaluated through cough sounds: An experimental investigation of effects of microphone type on accuracy. - Umayahara, Yasutaka; Soh, Zu; Ozaki, T.; Murakami, T.; Otsuka, Akira; Tsuji, Toshio (2017)

PANAMAP-B: A mask verification system for bipolar IC. - Yoshida, J.; Ozaki, T.; Goto, Y. (1981)