URL:
http://rewerse.net/publications/rewerse-publications.html#REWERSE-RP-2005-54

BibTeX:

@inproceedings{REWERSE-RP-2005-54,
	author = {Ian Horrocks and Bijan Parsia and Peter F. Patel-Schneider and James Hendler},
	title = {Semantic Web Architecture: Stack or Two Towers?},
	booktitle = {Proceedings of Third Workshop on Principles and Practice of Semantic Web Reasoning, Dagstuhl, Germany (11th--16th September 2005)},
	year = {2005},
	volume = {3703},
	organization = {REWERSE},
	series = {LNCS},
	pages = {37--41},
	url = {http://rewerse.net/publications/rewerse-publications.html#REWERSE-RP-2005-54}
}