Author	Title	Journal	ISSN	Publisher	Date	Volume	Number	Page	URL	URL(DOI)
ISHIKAWA Akira	Pluralism on the West German Broadcasting System	The NHK annual bulletin of broadcasting culture research	09101594	学術雑誌目次速報データベース由来	1986-00-00	31		127-148,303	http://ci.nii.ac.jp/naid/110000501247/en/