Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Urabe Koichi,Polarization of the self-activated luminescence in ZnS,Journal of the Physical Society of Japan,00319015,Tokyo : Physical Society of Japan,1968-03,24,3,543-548,https://cir.nii.ac.jp/crid/1523669554675384832,