T. Truman and A. De-graaff, Out of the box: Ideas about the future of air transport (Part 2), 2007.

E. Kolawole, The flying car: are we there yet? The Washington Post, 2012.

Z. Sarris, Survey of UAV applications in civil markets, Proceedings of the 9th IEEE Mediterranean Conference on Control and Automation, 2001.

G. Warwick, Unmanned Community Making Progress On Airspace Access Aviation Week and Space Technology, 05- Aug-2013

J. Stewart, Google trials drone deliveries BBC News, 2014.

M. Cummings, A Drone in Every Driveway, Scientific American, vol.308, issue.1, pp.28-29, 2013.
DOI : 10.1038/scientificamerican0113-28

T. Prevot, V. Battiste, E. Palmer, and S. Shelden, Air Traffic Concept Utilizing 4D Trajectories and Airborne Separation Assistance, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2003.
DOI : 10.2514/6.2003-5770

J. W. Andrews, H. Erzberger, and J. D. Welch, Safety analysis for advanced separation concepts, Air Traffic Control Quaterly, vol.14, issue.1, pp.5-24, 2006.

J. M. Hoekstra, R. N. Van-gent, and R. C. Ruigrok, Designing for safety: the ???free flight??? air traffic management concept, Reliability Engineering & System Safety, vol.75, issue.2, pp.215-232, 2002.
DOI : 10.1016/S0951-8320(01)00096-5

J. Krozel, M. Peters, and K. Bilimoria, A decentralized control strategy for distributed air/ground traffic separation, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2000.
DOI : 10.2514/6.2000-4062

J. M. Hoekstra, R. C. Ruigrok, and R. N. Van-gent, Free Flight in a Crowded Airspace?, Proceedings of the 3rd USA/Europe Air Traffic Management R&D Seminar, 2000.

M. R. Jardin, Analytical Relationships Between Conflict Counts and Air-Traffic Density, Journal of Guidance, Control, and Dynamics, vol.28, issue.6, pp.1150-1156, 2005.
DOI : 10.2514/1.12758

G. Warwick, Unmanned K-Max Gets Cleverer Aviation Week and Space Technology, 2013.

R. Ducret and L. Delaître, Parcel delivery and urban logistics changes in urban courier, express and parcel services, Proceedings of the 13th World Conference on Transport Research, 2013.
URL : https://hal.archives-ouvertes.fr/halshs-00853932

D. Tam, Amazon drones: Bold experiment or shrewd publicity stunt?

J. M. Hoekstra, Designing for safety: the ???free flight??? air traffic management concept, Reliability Engineering & System Safety, vol.75, issue.2, 2001.
DOI : 10.1016/S0951-8320(01)00096-5

W. Zeng and R. L. Church, Finding shortest paths on real road networks: the case for A*, International Journal of Geographical Information Science, vol.4, issue.4, pp.531-543, 2009.
DOI : 10.1287/trsc.32.1.65

F. Bussink, J. Hoekstra, and B. Heesbeen, Traffic Manager: A Flexible Desktop Simulation Tool Enabling Future ATM Research, 24th Digital Avionics Systems Conference, 2005.
DOI : 10.1109/DASC.2005.1563344

B. Korn, C. Edinger, S. Tittel, D. Kugler, T. Pütz et al., Sectorless ATM ??? A concept to increase en-route efficiency, 2009 IEEE/AIAA 28th Digital Avionics Systems Conference, 2009.
DOI : 10.1109/DASC.2009.5347535