@article{EXMATH_1989_1989_1_a19,
     author = {Fern\'andez Castillo, Jes\'us M.},
     title = {Sobre la estructura de {G-espacios}},
     journal = {Extracta mathematicae},
     pages = {102-104},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1989_1989_1_a19/}
}