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Kurepa, S. (1987). Quadratic and sesquilinear forms. Contributions to characterizations of inner product spaces. In: Butković, D., Kurepa, S., Kraljević, H. (eds) Functional Analysis II. Lecture Notes in Mathematics, vol 1242. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0072442
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DOI: https://doi.org/10.1007/BFb0072442
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