Ignazio Locatelli Rosanna Guida Alberto Colorni Ada Giannatelli METID's E-Learning Portal. 376-382 2001 conf/euromicro/2001 EUROMICRO http://csdl.computer.org/comp/proceedings/euromicro/2001/1236/00/12360376abs.htm db/conf/euromicro/euromicro2001.html#LocatelliGCG01