"Chikashi Tanaka,Tetsuji Yano,Tetsuo Kishi,Shuichi Shibata","Photoionization of proton ion-exchanged glass doped with Tb4O7","The 28th Japan-Korea International Seminor on Ceramics","Proceedngs of the 28th Japan-Korea International Seminor on Ceramics",,,," GO-O-11",2011,Nov.