Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Arai Hiroyoshi,Circular statistics for the analysis of directional geological data,The Journal of the Geological Society of Japan,00167630,The Geological Society of Japan,2011-10-15,117,10,547-564,https://cir.nii.ac.jp/crid/1390282681216194048,https://doi.org/10.5575/geosoc.117.547