@article{CMH_1978__53_139724,
     author = {Francois Borel},
     title = {Sur les groupes fondamentaux des {H-espaces.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {73--92},
     year = {1978},
     volume = {53},
     zbl = {0372.55010},
     url = {http://geodesic.mathdoc.fr/item/CMH_1978__53_139724/}
}