Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Matsumoto K. and Inoue T.,On a Collision avoidance when using Radar,The Journal of the Nautical Society of Japan,04666607,Japan Institute of Navigation,1959,20,0,29-34,https://cir.nii.ac.jp/crid/1390282681071820288,https://doi.org/10.9749/jina.20.0_29