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| 1 | Legrain, L., Business Documents of the Third Dynasty of Ur, Ur Excavations Texts 3, London 1937 |
| 2 | Laursen, S.T. - Steinkeller, P., Babylonia, the Gulf Region, and the Indus. Archaeological and Textual Evidence for Contact in the Third and Early Second Millennium B.C., Mesopotamian Civilizations 21, Winona Lake 2017 |
| http://cdli.earth/P137518 |
| http://www.penn.museum/collections/object.php?irn=347668 |
| http://www.ur-online.org/subject/2495/ |
| http://oracc.museum.upenn.edu/epsd2/P137518 |
| http://www.ebl.lmu.de/library/UM.47-29-193 |