Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SAWARAGI Yoshikazu and AKASHI Hajime and OKADA Tsuyoshi and YAMADA Sakae,Rigorous Treatment of the Hunting of Relay Servomechanism Operating on Sampled Data,Transactions of the Japan Society of Mechanical Engineers,00290270,The Japan Society of Mechanical Engineers,1959,25,155,720-727,https://cir.nii.ac.jp/crid/1390001205155401600,https://doi.org/10.1299/kikai1938.25.720