Template:SiecheNavalShipbuildingDanubius
From The Dreadnought Project
Sieche, Erwin and Dr. Nikolaus Sifferlinger (2007). 3rd International Conference on Industrial Heritage, available as a pdf online[1] Naval Shipbuilding at Ganz-Danubius in Rijeka From 1905 Till 1918 – Cruiser 'Helgoland' as an Example of Excellence.
