Ken Sakuma Naoto Hirosaki Naoki Kimura Masakazu Ohashi Rong-Jun Xie Yoshinobu Yamamoto Takayuki Suehiro Kenichiro Asano Daiichiro Tanaka White Light-Emitting Diode Lamps Using Oxynitride and Nitride Phosphor Materials. 2057-2064 2005 88-C IEICE Transactions 11 http://dx.doi.org/10.1093/ietele/e88-c.11.2057 db/journals/ieicet/ieicet88c.html#SakumaHKOXYSAT05