Antonella De Robbio – Dario Maguolo – Alberto Marini, Scientific and general subject classifications in the digital world. “High Energy Physics Libraries Webzine”, issue 5, November 2001 <http://doc.cern.ch/heplw/5/papers/4/>

Alberto Marini, Text processing for presentation and manipulation of mathematical resources presentato al Workshop Electronic media in mathematics, Coimbra (Portogallo), 13-15 settembre 2001 <http://www.mat.uc.pt/EMM/index.html>.