@article{1029001470,
author = {Shilane, Lewis},
title = {Steenrod squares and reduction of structure group for fibrations.},
journal = {Michigan Math. J.},
volume = {21},
number = {3},
year = {1975},
pages = { 129-139},
language = {en},
url = {http://dml.mathdoc.fr/item/1029001470}
}
Shilane, Lewis. Steenrod squares and reduction of structure group for fibrations.. Michigan Math. J., Tome 21 (1975) no. 3, pp. 129-139. http://gdmltest.u-ga.fr/item/1029001470/