Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Matsumoto Yasukuni and Irie Fujio,Superconductivity and Crystal Structure of the Y1Ba2Cu3O7−y–WO3 System,Japanese Journal of Applied Physics,0021-4922,The Japan Society of Applied Physics,1990,29,3,L416-L419,https://cir.nii.ac.jp/crid/1573950402934864512,