Helgason, Guðmundur. "WWI U-boat commanders: Oscar Maaß". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 February 2015.
Helgason, Guðmundur. "Ships hit by UB 95". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 February 2015.