@article{ARM_2009__45_2_a2,
     author = {Wockel, Christoph},
     title = {A generalization of {Steenrod{\textquoteright}s} approximation theorem},
     journal = {Archivum mathematicum},
     pages = {95--104},
     publisher = {mathdoc},
     volume = {45},
     number = {2},
     year = {2009},
     mrnumber = {2591666},
     zbl = {1212.58005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2009__45_2_a2/}
}