Hermann Gottschewski: "Hoiku shōka and the melody of the Japanese national anthem Kimi ga yo", in: Journal of the Society for Research in Asiatic Music (東洋音楽研究), No. 68 (2003), pp. (1)-(17). Published by The society for Research in Asiatic Musicდაარქივებული 2009-02-11 საიტზე Wayback Machine. .
Hermann Gottschewski: "Hoiku shōka and the melody of the Japanese national anthem Kimi ga yo", in: Journal of the Society for Research in Asiatic Music (東洋音楽研究), No. 68 (2003), pp. (1)-(17). Published by The society for Research in Asiatic Musicდაარქივებული 2009-02-11 საიტზე Wayback Machine. .