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Communicated by J. Serrin
This work was supported by the Alfred P. Sloan Foundation and by the National Science Foundation Grant G 14876.
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Friedman, A. Uniqueness of solutions of ordinary differential inequalities in Hilbert space. Arch. Rational Mech. Anal. 17, 353–357 (1964). https://doi.org/10.1007/BF00250471
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DOI: https://doi.org/10.1007/BF00250471