"Marie Nakazawa,Tsutomu Kosugi,Kentaro Nakamura,Sadayuki Ueha,Akihiro Maezawa,Yoshihiro Hirao","A high frequency variable focus ultrasonic transducer using polyurea thin film","2005 IEEE Ultrasonics Symposium","Proc. of 2005 IEEE Ultrasonics Symposium",,"Vol. 4",,"pp. 2313- 2316",2005,Sept.
"Yoshihiro Hirao,Kohei Yamamoto,Kentaro Nakamura,Sadayuki Ueha","Development of a hand-held sensor probe for detection of sound components radiated from a specific device using surface intensity measurements",,"Applied Acoustics",,"vol. 65","no. 7","pp. 719-735",2004,
"Yoshihiro Hirao,Kohei Yamamoto,Kentaro Nakamura,Sadayuki Ueha","Detection of sound radiated from a specific device using hand-held sensor probe for surface intensity measurements -precision of measurements in noisy environments","Inter-Noise 2003","Proceedings of the 32nd International Congrss and Exposition on Noise Control Engineering",,,"  N287","pp. 187-194",2003,Aug.
"’·’Ë�O”ü,�Έä�F–¾,’†‘ºŒ’‘¾˜Y,�ã‰H’å�s,•½”ö ‘P—T","ƒ|ƒŠ”A‘fˆ³“d�‚•ªŽq”––Œ‚ÌSiŠî”Â�ã‚Ö‚ÌŒ`�¬","“ú–{‰¹‹¿Šw‰ï2002”N�H‹GŒ¤‹†”­•\‰ï","“ú–{‰¹‹¿Šw‰ï2002”N�H‹GŒ¤‹†”­•\‰ï�u‰‰˜_•¶�W","“ú–{‰¹‹¿Šw‰ï","  3-8-16",,"pp. 1123-1124",2002,Sept.
"�‚‹´‘åŽO,�¬�™•×,�Έä�F–¾,’†‘ºŒ’‘¾˜Y,�ã‰H’å�s,•½”ö ‘P—T,—Ž�‡ •×","ƒ|ƒŠ”A‘fˆ³“d”––Œ‚Ì’´‰¹”gƒgƒ‰ƒ“ƒXƒfƒ…�[ƒT‚ւ̉ž—p","“ú–{Šw�p�U‹»‰ï’e�«”g‘fŽq‹Z�p‘æ150ˆÏˆõ‰ï‘æ66‰ñˆÏˆõ‰ï","“ú–{Šw�p�U‹»‰ï’e�«”g‘fŽq‹Z�p‘æ150ˆÏˆõ‰ï‘æ66‰ñˆÏˆõ‰ïŽ‘—¿",,,,"pp. 1-4",2000,Jan.