@article{RCM_1976__10_181657,
     author = {C. Ruiz Salguero and R. Ruiz},
     title = {Any equivalence relation over a category is a simplicial},
     journal = {Revista colombiana de matematicas},
     pages = {151--160},
     year = {1976},
     volume = {10},
     zbl = {0355.18011},
     url = {http://geodesic.mathdoc.fr/item/RCM_1976__10_181657/}
}