@incollection{MEM_2023_52_a0,
     author = {Ribarska, Nadezhda},
     title = {Academician {Kenderov} is turning 80},
     booktitle = {},
     series = {Mathematics and Education in Mathematics},
     pages = {9--15},
     year = {2023},
     volume = {52},
     language = {bg},
     url = {http://geodesic.mathdoc.fr/item/MEM_2023_52_a0/}
}