• Aguilo E, Alegre J, Sard M. 2003. Examining the market structure of the German and UK tour operating industries through an analysis of package holiday prices. Tourism Economics 9: 255278.
  • Alao O, Batabyal AA. 2013. Selling package tours to tourists: a contract theory perspective. Annals of Tourism Research. Forthcoming.
  • Bolton P, Dewatripont M. 2005. Contract Theory. MIT Press: Cambridge, MA.
  • Chand M, Katou AA. 2012. Strategic determinants for the selection of partner alliances in the Indian tour operator industry: a cross-national study. Journal of World Business 47: 167177.
  • Davies B, Downward P. 1998. Competition and contestability in the UK package tour industry: some econometric observations. Tourism Economics 4: 241251.
  • Huang GQ, Chen W, Song H, Zhang X. 2010. Game-theoretic study of the dynamics of tourism supply chains for package holidays under quantity competition. Tourism Economics 16: 197216.
  • Pearce DG. 1987. Spatial patterns of package tourism in Europe. Annals of Tourism Research 14: 183201.
  • Quiroga I. 1990. Characteristics of package tours in Europe. Annals of Tourism Research 17: 185207.
  • Theuvsen L. 2003. Vertical integration in the European package tour business. Annals of Tourism Research 31: 475478.
  • Weightman BA. 1987. Third world tour landscapes. Annals of Tourism Research 14: 227239.