Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kobayashi Yukio,Rules of Arithmetic of Physical Quantities : Meaning of Unit Quantities,Journal of the Physics Education Society of Japan,03856992,The Physics Education Society of Japan,2005,53,4,326-331,https://cir.nii.ac.jp/crid/1390282679493106048,https://doi.org/10.20653/pesj.53.4_326