Eugenio Picchi Lisa Biagini Davide Merlitti CiBIT: Biblioteca Italiana Telematica - A Digital Library for the Italian Cultural Heritage. 903-904 https://doi.org/10.1007/3-540-49653-X_89 1998 conf/ercimdl/1998 ECDL db/conf/ercimdl/ercimdl98.html#PicchiBM98