| Bibliography |  Suggestions |
| 1 | Sigrist, M. - Ozaki, T., Neo-Sumerian Administrative Tablets from the Yale Babylonian Collection. Part One, Biblioteca del Próximo Oriente Antiguo 6, Madrid 2009 |
| 2 | Pottorf, A.R., Social Stratification in Southern Mesopotamia during the Third Dynasty of Ur (ca. 2100–2000 BCE), Ph.D. Diss., Harvard University 2022 |
| http://collections.peabody.yale.edu/search/Record/YPM-BC-027150 |
| http://oracc.museum.upenn.edu/epsd2/P390800 |
| http://www.ebl.lmu.de/library/YBC.13736 |
| http://cdli.earth/P390800 |