1. Results of the Boeing Company Wake Turbulence Test Program
2. 2Tatnall, C.R. "A Proposed Methodology for Determining Wake-Vortex Imposed Aircraft Separation Constraints," Master of Science thesis,George Washington University,August 1995, 119 pp.
3. 3Ladecky,S.,AirTrafficSimulation,Inc.,Edmond,OK,privatecommunication,2008. Table2. Example separationtable for 6 categories.