Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SEKINO Kouichi and SHIMIZU Koji,Production of Natural Cracks With Various Shapes in the Heat Resisting Glass Plates and Evaluation of its Crack Opening Displacement by Optical Interferometry,Journal of the Japanese Society for Experimental Mechanics,13464930,The Japanese Society for Experimental Mechanics,2008,8,1,59-64,https://cir.nii.ac.jp/crid/1390001205189856896,https://doi.org/10.11395/jjsem.8.59