[1] Dr. Hojong Baik. Research Scientist. Virginia Tech. Blacksburg, VA. U.S.A., Nicholas Hinze, Graduate Research Associate, Blacksburg, VA. U.S.A. , Dr. Antonio A. Trani. Associate Professor. Virginia Tech. Blacksburg, VA. U.S.A. , Development of a Decision Support Model Using Map Objects to StudyTransportation Systems , 2012, NASA USA.
[2] Hojong Baik, Antonio A. Trani, Nicolas Hinze, Howard Swingle,Senanu Ashiabor, and Anand Seshadri, Forecasting Model for Air Taxi, Commercial Airline, and Automobile Demand in the United States Journal of the Transportation Research Board,Vol.2052 , No.2 , 2008 ,pp.9-20