@conference{Kos2014,
  author    = {Kostić Kovačević, I., Lukač, D., Gavrilović, J., Đurović, D.},
  title     = {Obrazovni alati  u nastavi matematike},
  booktitle = {Sinteza 2014 - Impact of the Internet on Business Activities in Serbia and Worldwide},
  year      = 2014,
  doi       = {10.15308/sinteza-2014-340-344},
  pages     = {340-344}
}