@article{EXMATH_1991_1991_1_a8,
     author = {C\'anovas Orvay, Francisca},
     title = {Campos c\'ubicos c{\'\i}clicos.},
     journal = {Extracta mathematicae},
     pages = {28-30},
     year = {1991},
     volume = {6},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1991_1991_1_a8/}
}