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Bibliography

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I. Liberman, On certain characteristic properties of convex bodies, Mat. Sbornik vol. 13 (55) (1943) pp. 239-262.

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G. Debreu, A social equilibrium existence theorem, Proc. Nat. Acad. Sci. U. S.A vol. 38 (1952) pp. 886-893. MR 0050251 (14:301c)

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S. Eilenberg and D. Montgomery, Fixed point theorems for multivalued transformations, Amer. J. Math. vol. 68 (1946) pp. 214-222. MR 0016676 (8:51a)

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E. G. Begle, A fixed point theorem, Ann. of Math. vol. 51 (1950) pp. 544-550. MR 0035433 (11:734d)

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K. Borsuk, Sur un continu acyclique qui se laisse transformer en lui même sans points invariant, Fund. Math. vol. 24 (1935) pp. 51-58.