Gunter Grieser Klaus P. Jantke Steffen Lange Bernd Thomas A Unifying Approach to HTML Wrapper Representation and Learning. 50-64 http://link.springer.de/link/service/series/0558/bibs/1967/19670050.htm 2000 conf/dis/2000 Discovery Science db/conf/dis/dis2000.html#GrieserJLT00