Author	Title	Journal	ISSN	Publisher	Date	Volume	Number	Page	URL	URL(DOI)
Oshiyama Atsushi	Oxygen Vacancy in SiO_2 : A Negative U System	Abstracts of the meeting of the Physical Society of Japan. Sectional meeting		The Physical Society of Japan (JPS)	1996-09-13	1996	2	189	http://ci.nii.ac.jp/naid/110001985081/en/