@conference{Kos2014,
  author    = {Kostić, M., Jovanović Tončev, M.},
  title     = {Importance of sustainable tourism},
  booktitle = {Sinteza 2014 - Impact of the Internet on Business Activities in Serbia and Worldwide},
  year      = 2014,
  doi       = {10.15308/sinteza-2014-722-725},
  pages     = {722-725}
}