@article{EMJ_2015_6_2_a6,
     author = {V. Kreinovich and M. Ceberio and Q. Brefort},
     title = {In category of sets and relations, it is possible to describe functions in~purely category terms},
     journal = {Eurasian mathematical journal},
     pages = {90--94},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2015_6_2_a6/}
}