Kopardekar, P.H., Schwartz, A., Magyarits, S. and Rhodes, J. 2009. Airspace Complexity Measurement: An Air Traffic Control Simulation Analysis. International Journal of Industrial Engineering: Theory, Applications and Practice. 16, 1 (Mar. 2009), 61–70. DOI:https://doi.org/10.23055/ijietap.2009.16.1.18.