Template:Barge1976
From Manifold Atlas
J. Barge, Structures diffĂ©rentiables sur les types d'homotopie rationnelle simplement connexes, Ann. Sci. École Norm. Sup. (4) 9 (1976), no.4, 469–501. MR0440574 (55 #13448) Zbl 0348.57016