@book{Frayne1997Ur, author = {Frayne, Douglas R.}, number = {vol. 3/2}, series = {Royal {Inscriptions} of {Mesopotamia} {Early} {Periods}}, year = {1997}, publisher = {University of Toronto Press}, title = {Ur {III} {Period} (2112-2004 {BC})}, } @book{Owen1975MVN3, address = {Roma}, author = {Owen, David I.}, number = {3}, series = {Materiali per il {Vocabolario} {Neosumerico}}, year = {1975}, publisher = {Multigrafica Editrice}, title = {The {John} {Frederick} {Lewis} {Collection}}, }