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Referenced as 'his book about the Vikings' - Tom Shippey's book is cited for calling Rollo by the name 'Ganga Rolf' instead of Rollo

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Described as a historical chronicle written by a monk called Nestor, serving as the primary source for early Rus history including the story of Rurik and the founding of Kiev

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Referenced as 'Sergei Ploky's book on the history of Ukraine' - cited for using the Ukrainian spelling 'Volodymyr' rather than the Russian 'Vladimir'

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Referenced as a book featuring Ibn Fadlan as a character, later adapted into the film 'The 13th Warrior' - hosts couldn't remember exact title, calling it 'The Death Eaters' or 'The Eaters of Light'

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Mentioned as having written about Vikings in the East, though no specific title given

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Referenced as an example of fiction about Vikings traveling to Constantinople (Miklagard), mentioned as part of discussion about the topic's appeal for adventure stories