| Bibliography |  Suggestions |
| 1 | Owen, D.I., The John Frederick Lewis Collection, Materiali per il Vocabolario Neosumerico 3, Rome 1975 287 Neo-Sumerian text(s) edited: 287 in Hand copy; 48 in Photo. |
| 2 | Steinkeller, P., Sale Documents of the Ur-III-Period, Freiburger Altorientalische Studien 17, Stuttgart 1989 |
| 3 | Gelb, I.J. - Steinkeller, P. - Whiting, R.M., Earliest Land Tenure Systems in the Near East. Ancient Kudurrus, 2 vols, Oriental Institute Publications 104, Chicago 1991 |
| 4 | Owen, D.I., "On the Seal of Aba-kala, son of Ur-mes", Nouvelles Assyriologiques Brèves et Utilitaires 2019: 92 |
| 5 | 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://cdli.earth/P113828 |
| http://oracc.museum.upenn.edu/epsd2/P113828 |