Key points are not available for this paper at this time.
Good old Russia! So it really does belong to Europe. And I'd always thought that was just a mistake of the geographers. (Alexander Pushkin quoted from Susan Layton, Russian Literature and Empire: Conquest of the Caucasus from Pushkin to Tolstoy [Cambridge, 1994, p. 86)
Michael Khodarkovsky (1999) studied this question.