1. Committee Sesar Program. (2010). Overview and Release 1 Plan v1.0. Brussel. https://extranet.sesarju.eu
2. Ellis, S. R. & Liston, D. B. (2010). Visual features involving motion seen from airport control towers. In 11th IFAC/IFIP/IFORS/IEA.
3. Ellis, S. R., Fürstenau, N., & Mittendorf, M. (2011). Determination of frame rate requirements for video-panorama-based virtual towers using visual discrimination of deceleration during simulated aircraft landing: Alternative analysis. In Tagungsband 9. Berliner Werkstatt Mensch-Maschine-Systeme (pp. 519–524). VDI-Verlag.
4. European Organisation for the Safety of Air Navigation. (2010). E-OCVM v3. Vol. II. http://www.eurocontrol.int/valfor/gallery/content/public/docs/E-OCVM3 Vol. I WebRelease.pdf
5. Friedman-Berg, F. (2012). Staffed Next GenTower Human-in-the-Loop Camera Integration Evaluation.