http://it-ebooks.directory/book-1782166629.html
[ Models and algorithms for integrated airline schedule planning and revenue management ] (http://transp-or.epfl.ch/documents/proceedings/Atasoy_TRISTAN2013.pdf)
[ Chapter 50: Scheduling Problems in the Airline Industry ] (http://andromeda.rutgers.edu/~jy380/research/air-schedule/chapter50.pdf)