Eija Airio Heikki Keskustalo Turid Hedlund Ari Pirkola The Impact of Word Normalization Methods and Merging Strategies on Multilingual IR. 74-84 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3237&spage=74 2003 conf/clef/2003 CLEF db/conf/clef/clef2003.html#AirioKHP03