We thank Professor Pasquale Mistretta,
Rector of University of Cagliari,
and Professor Luisa D'Arienzo,
director of the CIMAS
(Interdipartimental Center for Museums
and Historical Archive) for their continuos
support and helpful criticism.

This work has been partially supported by the
Assessorato alla Pubblica Istruzione,
Beni Culturali, Informazione,
Spettacolo e Sport of
Sardinia Regional Government.