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"A Note on the Equivalent Homotopy of Shperes."
R. L. Rubinsztein (1973)
- R. L. Rubinsztein:
A Note on the Equivalent Homotopy of Shperes. Bull. Acad. Pol. des Sci. Ser. Sci. Math. Astron. Phys. 21(6): 535-540 (1973)
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