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Communicated by J. Serrin
The preparation of this paper was sponsored in part by the U.S. Army Research Office under Grant DA-ARO-D-31-124-71-G18. Also in part by NSF Grant No. GP-28240, and in part by the Mathematical Institute of the University of Karlsruhe.
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Hestenes, M., Redheffer, R. On the minimization of certain quadratic functional. I. Arch. Rational Mech. Anal. 56, 1–14 (1974). https://doi.org/10.1007/BF00279818
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DOI: https://doi.org/10.1007/BF00279818