1. 2Wing,D."APotentiallyUsefulRoleforAirborneSeparationin4D-TrajectoryATMOperations,"Proceedings ofthe5thAIAAAviationTechnologyIntegrationandOperations(ATIO)Conference,AIAA-2005-7336,2005.
2. 3NASA,DAG-TMConceptElement5EnRouteFreeManeuveringforUser-PreferredSeparationAssuranceand Local TFM Conformance Operational Concept Description, NASA Advanced Air Transportation Technologies Project Milestone8.503.10,NASAAirspaceSystems ProgramOffice,WashingtonD.C.,2004.
3. 4NASA, DAG-TM Concept Element 11 Terminal Arrival Self-Spacing for Merging and In-Trail Separation Operational Concept Description, NASA Advanced Air Transportation Technologies Project Milestone 8.652.7, NASAAirspace Systems ProgramOffice,WashingtonD.C.,2004.
4. Distributed Air/Ground Traffic Management for En Route Flight Operations
5. Operational Concept for Collaborative Traffic Flow Management based on Field Observations