Niewöhner, Philipp, Ali Vardar, Stephen Mitchell, und Levent Egemen Vardar. 2023. „Churches, Caves, and Fortifications in the Upper Siberis/Kirmir River Valley. On the Byzantine Settlement Archaeology of Rural Galatia, Central Anatolia: With an Appendix on a Roman Statue for Ortiagon, Tetrarch of the Tolistobogii“. Istanbuler Mitteilungen 72 (Juli):1–73 (§). https://doi.org/10.34780/9hba-h68e.