See:
- Machteld Johanna Mellink, A Hittite cemetery at Gordion, Philadelphia : University Museum, University of Pennsylvania 1956
- Gabriel Pizzorno, Gareth Darbyshire: Mapping Gordion in: C. Brian Rose eds, The Archaeology of Phrygian Gordion, Royal City of Midas: Gordion Special Studies 7 (2013). pp. 23-38