Techno-typology and provenance of the obsidian chipped stones from Sofular Höyük, an Early Neolithic settlement near the Kızılırmak in Central Anatolia - Karakoç, Murat; Gemici, Hasan Can; Dirican, Murat; Başoğlu, Okşan (Univerza, Filozofska Fakulteta, 2023)