@conference{Sek2022,
  author    = {Sekulić, T., Manigoda, G., Kostić, V.},
  title     = {Teaching Trigonometry Online Using Geogebra Dynamical Materials},
  booktitle = {Sinteza 2022 - International Scientific Conference on Information Technology and Data Related Research},
  year      = 2022,
  doi       = {10.15308/Sinteza-2022-121-128},
  pages     = {121-128}
}