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This paper is partially supported under contract MM4 in Bulgaria 13/94.

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Stanilov, G., Videv, V. Four-Dimensional Pointwise Osserman Manifolds. Abh.Math.Semin.Univ.Hambg. 68, 1–6 (1998). https://doi.org/10.1007/BF02942546

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  • DOI: https://doi.org/10.1007/BF02942546

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