@incollection{MEM_2023_52_a17,
     author = {Tsvetkova, Daniela},
     title = {A lesson on applying the scalar product of two vectors},
     booktitle = {},
     series = {Mathematics and Education in Mathematics},
     pages = {198--201},
     year = {2023},
     volume = {52},
     language = {bg},
     url = {http://geodesic.mathdoc.fr/item/MEM_2023_52_a17/}
}