@InProceedings{Groot:04KR,
author = "P. Groot and A. ten Teije and F. van Harmelen",
title = "Towards a Structured Analysis of Approximate Problem Solving:
a Case Study in Classification",
booktitle = "Proceedings of the Ninth International Conference on Principles
of Knowledge Representation and Reasoning ({KR'04}) ",
year = 2004,
address = "Whistler, British Columbia, Canada",
month = "June",
publisher = "AAAI Press",
editor = "D. Dubois and C. Welty and M. Williams",
pages = "399--406"