1. Barden, D.: Simply connected five-manifolds. Ann. Math. 82(3), 365–385 (1965)
2. Bérard-Bergery, L.: Les variétés riemanniennes homogènes simplement connexes de dimension impaire à courbure strictement positive. J. Math. Pure et Appl. 55, 47–68 (1976)
3. Bredon, G.E.: Introduction to Compact Transformation Groups. Academic Press, New York (1972)
4. Cheeger, J.: Some examples of manifolds of non-negative curvature. J. Differ. Geom. 8, 623–628 (1973)
5. DeVito. J.: The Classification of Simply Connected Biquotients of Dimension at Most 7 and 3 New Examples of Almost Positively Curved Manifolds, Ph.D. thesis. University of Pennsylvania http://repository.upenn.edu/edissertations/311 (2011)