Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HAYASI Tatuo and ISAHARA Akira and HUZITA Ikuzi,A New Method of Producing Triangular Wave Form Oscillation,The Journal of the Institute of Electrical Engineers of Japan,0020-2878,The Institute of Electrical Engineers of Japan,1940,60,628,394-394,https://cir.nii.ac.jp/crid/1390001205142452480,https://doi.org/10.11526/ieejjournal1888.60.394