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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 39, No. 3, pp. 340–347, May–June, 1987.
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Liskevich, V.A., Semenov, Y.A. Self-adjointness of elliptic operators in infinitely many variables. Ukr Math J 39, 264–270 (1987). https://doi.org/10.1007/BF01057231
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DOI: https://doi.org/10.1007/BF01057231