@article{CMH_1987__62_140081,
     author = {P.J. Webb},
     title = {A local method in group cohomology.},
     journal = {Commentarii mathematici Helvetici},
     pages = {135--168},
     year = {1987},
     volume = {62},
     zbl = {0616.20022},
     url = {http://geodesic.mathdoc.fr/item/CMH_1987__62_140081/}
}