Boris Rybakov compared Hors and Dažbog to Helios and Apollo, respectively, concluding that both of them were solar gods, but while Hors represented the Sun itself, Dažbog, as deus dator, rather symbolised the life-giving power of the Sun.
Between 1963 and 1968 he worked as assistant to the chair of universal history at the Faculty of History, and 1968–1971 he was a PhD student of archeology at the Lomonosov Moscow State University, studying under such teachers as B. Rybakov, B. Grakov, A. Arcyhovskii, V. Janin, F. Kyzlasov, A. Meliukova and I. Jacenko.
Boris Rybakov argued for identification of the faces with the gods Perun, Svarog, Lada and Mokosh (compare Zbruch idol).
In 1961, an archaeological excavation in Vitičev, near Kiev, by B. A. Rybakov and Boris Kleiber, provided a solution.
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Most of the scholars that specialize in the field of mythological studies and Slavic linguistics (such as Boris Rybakov, Andrey Zaliznyak, Leo Klein and all Russian academic historians and linguists) consider it a forgery.
Soviet historians such as Boris Grekov and Boris Rybakov hypothesized that "Kuyaba" was a mispronunciation of "Kiev".