1. Hamamatsu Photonics K.K, http://www.hamamatsu.com/jp/en/product/category/3100/4004/4113/index.html.
2. Photonique SA, 〈http://www.photonique.ch/LEGACY〉.
3. Zecotek Photonics Inc., Zecotek Brochure, 2008.
4. Opto-Semiconductor Handbook, Hamamatsu Photonics K.K., 〈http://www.hamamatsu.com/jp/en/hamamatsu/overview/bsd/solid_state_division/related_documents.html〉.
5. H. Oide, et al., PoS(PD07) 008, 2007.