1. Schneekluth, H.; Entwerfen von Schiffen. Koehlers Verlagsgesellschaft, Herford, 1985
2. Schneekluth, H.; Hydromechanik zum Schiffsentwurf. Koehlers Verlagsgesellschaft, Herford, 1977
3. Lewis, E.; Principles of Naval Architecture, Vol. II, The Society of Naval Architects and Marine Engineers, Jer sey City, NJ, 1988
4. Nienhuis, U.; Analysis of Thruster Effectivity, PhD The sis, TU Delft, Delft, Oct. 1992
5. Van Terwisga, T.; Quadvlieg, F.; Valkhof, H.; Steerable Propulsion Units: Hydrodynamic issues and Design Consequences, MARIN, Wageningen, Niederlande, Aug. 2001