2 I mention here just a short selection of some works of these two scholars: Kellens, J., Zoroastre et l'Avesta ancient: Quatre leçons au Collège de France (Paris, 1991)Google Scholar, Kellens, J., Le pantheon de l'Avesta ancien (Wiesbaden, 1994)Google Scholar; Kellens, J., Essays on Zarathustra and Zoroastrianism (Costa Mesa, 2000)Google Scholar; Kellens, J., ‘Zoroastre dans l'histoire ou dans le mythe? À propos du dernier livre du Gherardo Gnoli’, Journal Asiatique 189 (2001), pp. 171–184CrossRefGoogle Scholar; Kellens, J., La quatrième naissance de Zarathushtra (Paris, 2006)Google Scholar; Kellens, J., ‘The Gāthās, Said to Be of Zarathustra’, in The Wiley Blackwell Companion to Zoroastrianism, (eds.) Stausberg, M. and Vevaina, Y. S.-D. (Chichester, 2015), pp. 44–50Google Scholar; Skjærvø, P. O., ‘A future for Gathic Studies? The Ancient Iran Poet and his Poetry’, Bulletin of the Asia Institute 11 (1998 [2001])Google Scholar; Skjærvø, P. O., ‘Zarathustra: A Revolutionary Monotheist?’, in Reconsidering the Concept of Revolutionary Monotheism, (ed.) Pongratz-Leisten, B. (Winona Lake, 2011), pp. 317–350Google Scholar; Skjaervø, P. O., ‘The Gāthās as Myth and Ritual’, in The Wiley Blackwell Companion to Zoroastrianism, (eds.) Stausberg, M. and Vevaina, Y. S.-D., (Chichester, 2015)Google Scholar. However, there are still attempts to save the traditional view, e.g. A. Hintze, ‘Change and continuity in the Zoroastrian tradition’, (London, 2013).