1. Hosoi H. Approach in the use of cartilage conduction speaker, Japanese Patent Number 4541111. Filing date November 17; 2004.
2. Sakaguchi T, Saito O, Hosoi H. Hearing aid using cartilage conduction. In: Proceedings of the midwinter research meeting of association for research in otolaryngology, vol. 545. Phoenix; 2008.
3. Development of cartilage conduction hearing aid;Hosoi;Arch Mater Sci Eng,2010
4. Nishimura T, Fukuda F, Saito O, Okayasu T, Miyamae R, Shimokura R, Takaki Y, Hosoi H. Development of cartilage conduction hearing aid-clinical application-. In: Proceedings of otology Japan 20, vol. 647. Matsuyama; 2010.
5. Shimokura R, Takaki Y, Nishimura T, Hosoi H. Development of cartilage conduction hearing aid-measurement of sound in external auditory canal-. In: Proceedings of the 13th Korea-Japan joint meeting otorhinolaryngology-head and neck surgery, vol. 94. Seoul; 2010.