Crusading at the End of the World: the Spread of the Idea of Jerusalem after 1099 to the Baltic Sea Area and to the Iberiand Peninsula - Jensen, Kurt Villads (. Crusading on the edge. - Turnhout : Brepols, [2016]. - xv, 409 Seiten. - Illustrationen, Pläne. - ISBN 2-503-54881-4, 2016)