Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kurokawa Yutaka and Ozoe Nobuaki and Ota Hideaki,Observation of Oolitics with Scanning Electron Microscope and Calculation of Water Absorption Percentage.,Journal of Japan Foundry Engineering Society,13420429,Japan Foundry Engineering Society,1998,70,8,543-549,https://cir.nii.ac.jp/crid/1390282681484821760,https://doi.org/10.11279/jfes.70.543