Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) PATIL RN,Axial thermal Expansion of ZrO_2 and HfO_2 in the range room temperature to 1400℃,J Appl Cryst,,,1969,2,,281-288,https://cir.nii.ac.jp/crid/1570572700019656704,