@article{MAN_1971__194_162197,
     author = {Daniel QUILLEN},
     title = {The {Mod} 2 {Cohomology} {Rings} of {Extra-special} 2-groups and the {Spinor} {Groups.}},
     journal = {Mathematische Annalen},
     pages = {197--212},
     publisher = {mathdoc},
     volume = {194},
     year = {1971},
     zbl = {0225.55015},
     url = {http://geodesic.mathdoc.fr/item/MAN_1971__194_162197/}
}