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| 1 | Grégoire, J.-P., Archives administratives sumériennes, Paris 1970 |
| 2 | Maaijer, R. de, "Late Third Millennium Identifying Marks", W.H. van Soldt (ed.), Veenhof Anniversary Volume. Studies Presented to Klaas R. Veenhof on the Occasion of his Sixty-Fifth Birthday, Istanbul 2001, pp. 301-324 |
| http://cdli.earth/P100122 |
| http://oracc.museum.upenn.edu/epsd2/P100122 |