@article{MS2_1978__43_166600,
     author = {L.S. Husch},
     title = {Fibres of {Hurewicz} and approximate fibrations.},
     journal = {Mathematica Scandinavica},
     pages = {44--48},
     year = {1978},
     volume = {43},
     zbl = {0408.55011},
     url = {http://geodesic.mathdoc.fr/item/MS2_1978__43_166600/}
}