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Supported in part by NSF Grant GP-23392.
Supported in part by NSF Grant GP-20228.
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DePrima, C.R., Petryshyn, W.V. Remarks on strict monotonicity and surjectivity properties of duality mappings defined on real normed linear spaces. Math Z 123, 49–55 (1971). https://doi.org/10.1007/BF01113932
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DOI: https://doi.org/10.1007/BF01113932