| Bibliography |  Suggestions |
| 1 | Sigrist, M., Texts from the Yale Babylonian Collections. II, Sumerian Archival Texts 3, Bethesda 2000 |
| 2 | Tsouparopoulou, C., The Ur III Seals Impressed on Documents from Puzriš-Dagān (Drehem), Heidelberger Studien zum Alten Orient 16, Heidelberg 2015 |
| http://collections.peabody.yale.edu/search/Record/YPM-BC-015420 |
| http://oracc.museum.upenn.edu/epsd2/P144601 |
| http://www.ebl.lmu.de/fragmentarium/YBC.679 |
| http://cdli.ucla.edu/P144601 |