See:
- https://www.hittitemonuments.com/kurubel/index.html
- http://digitalcollections.library.ku.edu.tr/cdm/search/searchterm/Kurubel
- John David Hawkins, Inscriptions of the Iron Age: Part 1: Text, Introduction, Karatepe, Karkamis, Tell Ahmar, Maras, Malatya, Commagene. Part 2: Text, Amuq, Aleppo, Hama, Tabal, Assur Letters, Miscellaneous, Seals, Indices. Part 3: Plates, Walter de Gruyter 2000, pp. diff.