@article{CLTM_1993_1993_1_a21,
     author = {Pych-Taberska, Paulina},
     title = {Propiedades de algunos aproximantes bivariantes.},
     journal = {Collectanea mathematica},
     pages = {237-246},
     publisher = {mathdoc},
     volume = {44},
     number = {1-2-3},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1993_1993_1_a21/}
}