Van Der Luehe, Oskar; Soltau, Dirk; Berkefeld, Thomas; Schelenz, Thomas (2003). "KAOS: Adaptive optics system for the Vacuum Tower Telescope at Teide Observatory". In Keil, Stephen L.; Avakyan, Sergey V. (eds.). Innovative Telescopes and Instrumentation for Solar Astrophysics. Innovative Telescopes and Instrumentation for Solar Astrophysics. Vol. 4853. p. 187. Bibcode:2003SPIE.4853..187V. doi:10.1117/12.498659.
Van Der Luehe, Oskar; Soltau, Dirk; Berkefeld, Thomas; Schelenz, Thomas (2003). "KAOS: Adaptive optics system for the Vacuum Tower Telescope at Teide Observatory". In Keil, Stephen L.; Avakyan, Sergey V. (eds.). Innovative Telescopes and Instrumentation for Solar Astrophysics. Innovative Telescopes and Instrumentation for Solar Astrophysics. Vol. 4853. p. 187. Bibcode:2003SPIE.4853..187V. doi:10.1117/12.498659.