Kopanias, Konstantinos (2015), «The Mushki/Phrygian Problem from the Near Eastern Point of View», In: Nostoi. Indigenous Culture, Migration and Integration in the Aegean Islands and Western Anatolia During the Late Bronze and Early Iron Age. Proceedings of the International Conference Istanbul 2011, Edited by Ν. Stampolides, C. Maner, and K. Kopanias. Istanbul: Koç University Press
Woodhouse, Robert (2009). «An overview of research on Phrygian from the nineteenth century to the present day». Studia Linguistica Universitatis Iagellonicae Cracoviensis. 126 (1): 171. doi:10.2478/v10148-010-0013-x. ISSN2083-4624. «This question is of course only just separable from the question of which languages within Indo-European are most closely related to Phrygian, which has also been hotly debated. A turning point in this debate was Kortlandt's (1988) demonstration on the basis of shared sound changes that Thraco-Armenian had separated from Phrygian and other originally Balkan languages at an early stage. The consensus has now returned to regarding Greek as the closest relative.»
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Woodhouse, Robert (2009). «An overview of research on Phrygian from the nineteenth century to the present day». Studia Linguistica Universitatis Iagellonicae Cracoviensis. 126 (1): 171. doi:10.2478/v10148-010-0013-x. ISSN2083-4624. «This question is of course only just separable from the question of which languages within Indo-European are most closely related to Phrygian, which has also been hotly debated. A turning point in this debate was Kortlandt's (1988) demonstration on the basis of shared sound changes that Thraco-Armenian had separated from Phrygian and other originally Balkan languages at an early stage. The consensus has now returned to regarding Greek as the closest relative.»
Woodhouse, Robert (2009). «An overview of research on Phrygian from the nineteenth century to the present day». Studia Linguistica Universitatis Iagellonicae Cracoviensis. 126 (1): 171. doi:10.2478/v10148-010-0013-x. ISSN2083-4624. «This question is of course only just separable from the question of which languages within Indo-European are most closely related to Phrygian, which has also been hotly debated. A turning point in this debate was Kortlandt's (1988) demonstration on the basis of shared sound changes that Thraco-Armenian had separated from Phrygian and other originally Balkan languages at an early stage. The consensus has now returned to regarding Greek as the closest relative.»