1. JointPlanningandDevelopmentOffice(JPDO),"NextGenerationAir Transportation System:IntegratedPlan,"Dec.2004, http://www.jpdo.gov/library/NGATS_v1_1204r.pdf
2. Reynolds,TomG.andHansman,R.John,"Analysis of SeparationMinimaUsingA SurveillanceStateVectorApproach",3rdUSA/EuropeAirTrafficManagementR&D Seminar,Napoli,June13-16,2000.