@incollection{MEM_2020_49_a21,
     author = {Zablotskii, Vladimir and Vasileva, Svetlana},
     title = {Geodetic tasks in programming training courses},
     booktitle = {},
     series = {Mathematics and Education in Mathematics},
     pages = {198--206},
     year = {2020},
     volume = {49},
     language = {bg},
     url = {http://geodesic.mathdoc.fr/item/MEM_2020_49_a21/}
}