@ARTICLE(       UV88a,
	AUTHOR = "Ullman, Jeffrey D. and Van Gelder, Allen",
	TITLE = " Parallel Complexity of Logical Query Programs",
	JOURNAL = "Algorithmica",
	VOLUME = "3", NUMBER = "1",
	PAGES = "5--42",
	URL = "http://www.springerlink.com/content/un5uju4pj430175w/",
	NOTE = "(Preprint available from second author. Short version
		appeared in FOCS, 1986.)",
	YEAR = "1988"   )