@article{EXMATH_1991_1991_1_a41,
     author = {Murillo, Aniceto},
     title = {La clase de cohomolog{\'\i}a superior de determinados espacios.},
     journal = {Extracta mathematicae},
     pages = {181-183},
     publisher = {mathdoc},
     volume = {6},
     number = {2-3},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1991_1991_1_a41/}
}