@incollection{MEM_2021_50_a27,
     author = {Georgieva, Penka and Nikolova, Evgeniya},
     title = {Developing communication competencies through university courses in mathematics},
     booktitle = {},
     series = {Mathematics and Education in Mathematics},
     pages = {238--244},
     year = {2021},
     volume = {50},
     language = {bg},
     url = {http://geodesic.mathdoc.fr/item/MEM_2021_50_a27/}
}