FAA News Release (August 4, 2005).  FAA Develops New Air Traffic Control Tower Siting Technology: Agency Sees Enhanced Safety and Cost Savings

Krebs, W.K., Hewitt, G. Murrill, S., Driggers, R. (2005).  How high is high enough?  Quantifying the impact of air traffic control tower observation height on distance perception.  Proceedings of the 13th Annual International Symposium on Aviation Psychology, 13, 322-326.

October 17 , 2005 presentation: "Human Factors Research & Engineering: Tower Siting Visibility Analysis "

Vollmerhausen, R.H. and Jacobs, E. (2004).  The targeting task performance (TTP) metric: A new model for predicting target acquisition performance (Night Vision and Electronic Sensors Directorate Rep. No. AMSEL-NV-TR-230) .  Fort Belvoir, VA: U.S. Army CERDEC.

Kohnle, A. Gonglewsk, J.D., Schmugge, T.J. (2001).  Statistical analysis of measurements of atmospheric turbulence in different climates.  Proceedings of the SPIE - The International Society for Optical Engineering , 4538, 93-101.