@inproceedings{KBSE-1991-IpCH,
	author        = "Saimond Ip and Louis C.-Y. Cheung and Tony Holden",
	booktitle     = "{Proceedings of the Sixth Annual Knowledge-Based Software Engineering Conference}",
	pages         = "8--15",
	publisher     = "{IEEE Computer Society}",
	title         = "{Complex Objects in Knowledge-Based Requirements Engineering}",
	year          = 1991,
}