| Bibliography |  Suggestions |
| 1 | Sigrist, M., Texts from the Yale Babylonian Collections. I, Sumerian Archival Texts 2, Bethesda 2000 |
| 2 | Ouyang, X., "Administration of the Irrigation Fee in Umma during the Ur III Period (ca. 2112-2004 BCE)", L. Kogan et al. (eds.), City Administration in the Ancient Near East. Proceedings of the 53e Rencontre Assyriologique Internationale. 2, Babel und Bibel 5, Winona Lake 2010, pp. 317-349 |
| http://collections.peabody.yale.edu/search/Record/YPM-BC-015898 |
| http://oracc.museum.upenn.edu/epsd2/P143753 |
| http://www.ebl.lmu.de/fragmentarium/YBC.1157 |
| http://cdli.mpiwg-berlin.mpg.de/P143753 |