@article{MAT_1960_4_5_a3,
     author = {M. Demazure},
     title = {Th\'eor\`emes de {Hurewicz} et {Whitehead}},
     journal = {Matematika},
     pages = {38--49},
     publisher = {mathdoc},
     volume = {4},
     number = {5},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1960_4_5_a3/}
}