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Communicated by C. Truesdell
This research was supported in part by the United States Air Force through the Air Force Office of Scientific Research of the Air Research and Development Command under Contract No. 49(638)-228.
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Payne, L.E., Weinberger, H.F. An optimal Poincaré inequality for convex domains. Arch. Rational Mech. Anal. 5, 286–292 (1960). https://doi.org/10.1007/BF00252910
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DOI: https://doi.org/10.1007/BF00252910