Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HAYASAKA Hiroshi,Various Intersection Line Shapes of Two Oblique Cylinders,Journal of Graphic Science of Japan,03875512,JAPAN SOCIETY FOR GRAPHIC SCIENCE,1992,26,1,3-9,https://cir.nii.ac.jp/crid/1390282679613706880,https://doi.org/10.5989/jsgs.26.3