@article{GAMA_1974_1974_1_a17,
     author = {Mart{\'\i}nez Gadea, Pedro},
     title = {Tipo de homotop{\'\i}a racional y formas diferenciales.},
     journal = {Gaceta matem\'atica},
     pages = {145-157},
     year = {1974},
     volume = {26},
     number = {5-6},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/GAMA_1974_1974_1_a17/}
}