Nottelmann, pp. 120, 129, 135, 145–146. Nottelmann, Dirk (2023). Wright, Christopher C. (ed.). "From "Wooden Walls" to "New-Testament Ships": The Development of the German Armored Cruiser 1854–1918, Part III: "Armor—Light Version"". Warship International. LX (2): 118–156. ISSN0043-0374.
Nottelmann, pp. 146–147. Nottelmann, Dirk (2023). Wright, Christopher C. (ed.). "From "Wooden Walls" to "New-Testament Ships": The Development of the German Armored Cruiser 1854–1918, Part III: "Armor—Light Version"". Warship International. LX (2): 118–156. ISSN0043-0374.
Nottelmann, pp. 145–150. Nottelmann, Dirk (2023). Wright, Christopher C. (ed.). "From "Wooden Walls" to "New-Testament Ships": The Development of the German Armored Cruiser 1854–1918, Part III: "Armor—Light Version"". Warship International. LX (2): 118–156. ISSN0043-0374.
Nottelmann, p. 147. Nottelmann, Dirk (2023). Wright, Christopher C. (ed.). "From "Wooden Walls" to "New-Testament Ships": The Development of the German Armored Cruiser 1854–1918, Part III: "Armor—Light Version"". Warship International. LX (2): 118–156. ISSN0043-0374.
Nottelmann, pp. 148–150. Nottelmann, Dirk (2023). Wright, Christopher C. (ed.). "From "Wooden Walls" to "New-Testament Ships": The Development of the German Armored Cruiser 1854–1918, Part III: "Armor—Light Version"". Warship International. LX (2): 118–156. ISSN0043-0374.
Nottelmann, p. 150. Nottelmann, Dirk (2023). Wright, Christopher C. (ed.). "From "Wooden Walls" to "New-Testament Ships": The Development of the German Armored Cruiser 1854–1918, Part III: "Armor—Light Version"". Warship International. LX (2): 118–156. ISSN0043-0374.
Nottelmann, p. 155. Nottelmann, Dirk (2023). Wright, Christopher C. (ed.). "From "Wooden Walls" to "New-Testament Ships": The Development of the German Armored Cruiser 1854–1918, Part III: "Armor—Light Version"". Warship International. LX (2): 118–156. ISSN0043-0374.