@incollection{MEM_2020_49_a12,
     author = {Dangalchev, Chavdar},
     title = {Using entropy of categorical data for clustering},
     booktitle = {},
     series = {Mathematics and Education in Mathematics},
     pages = {133--136},
     year = {2020},
     volume = {49},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MEM_2020_49_a12/}
}