Author	Title	Journal	ISSN	Publisher	Date	Volume	Number	Page	URL	URL(DOI)
Yamashita  Iwao	The Learning System of Flow Chart in the Programming Language Education by Personal Computer	Research reports of the Ariake Technical College	03856844	Ariake National College of Technology	1990-01-00	26		1-5	http://ci.nii.ac.jp/naid/110001102116/en/