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Krein، M.؛ Šmulian، V. (1940). "On regularly convex sets in the space conjugate to a Banach space". Annals of Mathematics (2), Second series. ج. 41. ص. 556–583. DOI:10.2307/1968735. JSTOR:1968735.
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Krein، M.؛ Šmulian، V. (1940). "On regularly convex sets in the space conjugate to a Banach space". Annals of Mathematics (2), Second series. ج. 41. ص. 556–583. DOI:10.2307/1968735. JSTOR:1968735.