Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

	1	Kenneth Baclawski , Bipin Indurkhya, The notion of inheritance in object-oriented programming, Communications of the ACM, v.37 n.9, p.118-119, Sept. 1994  [doi>10.1145/182987.184080]
	2	James W. Cooper, Using design patterns, Communications of the ACM, v.41 n.6, p.65-68, June 1998  [doi>10.1145/276609.276621]
	3	Erich Gamma , Richard Helm , Ralph Johnson , John Vlissides, Design patterns: elements of reusable object-oriented software, Addison-Wesley Longman Publishing Co., Inc., Boston, MA, 1995
	4	Grosberg, J.A. Comment on considering 'class' harmful. Cornmun. ACM 36, 1 0an. 1993), 113-114.
	5	Halbert, DC. O'Brien, P.D. Using types and inheritance in object-oriented programming. IEEE Sofiw. 4, 5 (May 1987), 71-79.
	6	Wilf LaLonde , John Pugh, Smalltalk: subclassing subtyping is-a, Journal of Object-Oriented Programming, v.3 n.5, p.57-62, Jan. 1991
	7	J. F. Sowa, Conceptual structures: information processing in mind and machine, Addison-Wesley Longman Publishing Co., Inc., Boston, MA, 1984
	8	Winkler, J.F.H. Objectivism: 'class' considered harmful. Corn,nun. ACM 3~ 8 (Aug. 1992), 128-130.

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