"Yoshihisa Aiura,Kenichi Ozawa,Izumi Hase,Kyoko Bando,Hiroto Haga,Hirofumi Kawanaka,Akane Samizo,Naoto Kikuchi,Kazuhiko Mase","Disappearance of Localized Valence Band Maximum of Ternary Tin Oxide with Pyrochlore Structure, Sn2Nb2O7",,"The Journal of Physical Chemistry C","American Chemical Society","Vol. 121","No. 17","pp. 9480-9488",2017,Apr.