| Bibliography |  Suggestions |
| 1 | Contenau, G., Umma sous la dynastie d'Ur, Paris 1916 |
| 2 | Steinkeller, P., "New Light on the Hydrology and Topography of Southern Babylonia in the Third Millennium", Zeitschrift für Assyriologie 91 (2001) 22-84 |
| 3 | Blaschke, T., Euphrat und Tigris im Alten Orient, Leipziger Altorientalistische Studien 6, Wiesbaden 2018 |
| http://oracc.museum.upenn.edu/epsd2/P139606 |
| http://cdli.earth/P139606 |