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This could have been written a hundred years ago. There needs to be inclusion of the restoration and archaeological work of the late 20th century. See, e.g., Moritz, T., Biegel, G., & Steinmetz, W. D., eds. (2002). Ein feste Burg, die Plesse: Begleitband zur Ausstellung: Staats-und Universitätsbibliothek Göttingen, Neubau, Foyer: Braunschweigisches Landesmuseum, Ausstellungszentrum Hinter Ägidien (Vol. 98). Braunschweigisches Landesmuseum. Kdammers ( talk) 02:39, 18 January 2013 (UTC) reply