Analysis of information sources in references of the Wikipedia article "Ancient Macedonians" in English language version.
Recent scholarship has established the position of (ancient) Macedonian within the dialect map of North-West Greek (see, among others, Méndez Dosuna 2012, 2014, 2015; Crespo 2012, 2015). Here belongs the study by M. Hatzopoulos, who offers a critical review of recent research on the Macedonian dialect, arguing that all available evidence points to the conclusion that this is a Greek dialect of the North-West group.
In general, the term 'barbarian' has often been used by Greek authors in a very broad sense referring not only to clearly non-Greek populations, but also to Greek populations on the fringe of the Greek world and/or with a particular linguistic character that may have partly arisen due to some substratum/adstratum interference (e.g Macedonia, Pamphylia).