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A. Borel, Sous-groupes commutatifs et torsion des groupes de Lie compacts connexes, Tôhoku Math. J. 13 (1961), 216-240. MR 0147579 (26:5094)

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A. Borel and C. Chevalley, The Betti numbers of the exceptional groups, Mem. Amer. Math. Soc. 14 (1955), 1-9. MR 0069180 (16:996e)

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R. Bott and H. Samelson, Application of the theory of Morse to symmetric spaces, Amer. J. Math. 53 (1958), 964-1029. MR 0105694 (21:4430)

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A. Clark, On of finite-dimensional H-spaces, Ann. of Math. 78 (1963), 193-196. MR 0151975 (27:1956)

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B. Harris, Suspensions and characteristic maps for symmetric spaces, Ann. of Math. 76 (1962), 295-305. MR 0149479 (26:6967)

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S.-T. Hu, Homotopy theory, Academic Press, New York, 1959. MR 0106454 (21:5186)

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N. Jacobson, Some groups of transformations defined by Jordan algebras. I, II, III, J. Reine Angew. Math. 201 (1959), 178-195, ibid. 204 (1960), 74-98, ibid. 207 (1961), 61-85. MR 0106936 (21:5666)

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M. Kervaire, Some non-stable homotopy groups of Lie groups, Illinois J. Math. 4 (1960), 161-169. MR 0113237 (22:4075)

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P. G. Kumpel, Jr., On the homotopy groups of the exceptional Lie groups, Trans. Amer. Math. Soc. 120 (1965), 481-498. MR 0192511 (33:736)

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J.-P. Serre, Groupes d'homotopie et classes de groupes abéliens, Ann. of Math. 58 (1953), 258-294. MR 0059548 (15:548c)