id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajis02-286	Lee, Ming-Chi; Shih, Timothy; Huang, Teh-Sheng	Strengthen and Support the Maintenance of Object-Oriented Software	1999	9	.pdf	application/pdf	5983	326	65	Class hierarchy consists of a set of ordered inheritance relationships and is often denoted as a directed acyclic graph. In practice, this design of class hierarchy is an incremental and iterative process.	cache/ajis02-286.pdf	txt/ajis02-286.txt