Philippe Lemoisson Stefano A. Cerri S. A. Mahe Jean Sallantin Constructive Interactions. 2003 conf/lege/2003-3 LeGE-WG 3 http://ewic.bcs.org/conferences/2003/3rdlege/session1/paper2.htm db/conf/lege/lege32003.html#LemoissonCMS03