Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) S. Iijima and J.G. Allpress,Structural Studies by High-Resolution Electron Microscopy --Tetragonal Tungsten Bronze-Type Structures in the System Nb2O5-WO3,東北大学科学計測研究所報告,00408689,仙台 : 東北大学科学計測研究所,1975-03,23,2・3,p210-225,https://cir.nii.ac.jp/crid/1520572360110742272,