@article{RCM_1979__13_181678,
     author = {Roberto Ruiz S.},
     title = {Subdivisiones {Relativas.}},
     journal = {Revista colombiana de matematicas},
     pages = {75--92},
     year = {1979},
     volume = {13},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/RCM_1979__13_181678/}
}