1. T.M. Barrows, Simplified methods of predicting aircraft rolling moments due to vortex encounters, in: AIAA 14th Aerospace Sciences Meeting, Washington, DC, AIAA 76-61, January 1976
2. A. de Bruin, WAVENC, Wake vortex evolution and wake vortex encounter, Publishable Synthesis Report, National Aerospace Lab., NLR-TR-2000-079, Amsterdam, 2000
3. A. de Bruin, S-wake assessment of wake vortex safety, Publishable Summary Report, NLR-TP-2003-243, 2003
4. Chicago Monoacoustic Vortex Sensing System, vol. 4, Wake Vortex Decay;Burnham,1982
5. G.L. Donohue, D.K. Rutishauser, The effect of aircraft wake vortex separation on air transport capacity, in: 4th FAA/Eurocontrol R&C Conference, Santa Fe, NM, December 2001