^ Olsen, Birgit Anette (1999) The noun in Biblical Armenian: origin and word-formation: with special emphasis on the Indo-European heritage (Trends in linguistics. Studies and monographs; 119), Berlin, New York: Mouton de Gruyter, page 109
^ Lubotsky, Alexander (2011) “ravi-”, in The Indo-Aryan Inherited Lexicon (in progress) (Indo-European Etymological Dictionary Project), Leiden University, page 412
^ Prósper, Blanca María (2024) “Celto-Venetica: Indo-European Names from North-Eastern Italy and the Dialectal Classification of Venetic”, in Voprosy Onomastiki, volume 21, number 2, pages 9-50
^ Schaffner, Stefan (2016–2017) “Lateinisch rutilus ‘rötlich, gelbrot, goldgelb’, altir. ruithen ‘Strahl, Glanz’
und kymr. rwt ‘Korrosion’”, in Die Sprache (in German), volume 52, number 1, pages 102–123
