@article{EXMATH_1990_1990_1_a10,
     author = {Pambuccian, Victor},
     title = {Sobre la envolvente pitag\'orica de {Q.}},
     journal = {Extracta mathematicae},
     pages = {29-31},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1990_1990_1_a10/}
}