Pessinus (Ballıhisar) was according to Ancient Greek and Roman authors traditiom a Phrygian city founded by the king Midas but archaeological research since 1967 showed that the city developed ca 400 BC at the earliest.
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Damjan Krsmanovic, Ground Survey in Pessinus and its surroundings, Kazı Sonuçları Toplantısı 33.1-http://www.academia.edu/4376672
- Damjan Krsmanovic, The excavations at Pessinus: a conspectus of the work by P. Lambrechts (1967-73) and J. Devreker (1986-2008)
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John Devreker,Hugo Thoen,Frank Vermeulen, Excavations in Pessinus: The So-called Acropolis : from Hellenistic and Roman Cemetery to Byzantine Castle, Academia Press, 2003