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All-Union Scientific-Research Institute for the Economics of Gas Industry. Translated from Funktsional'nyi Analiz i Ego Prilozheniya, Vol. 16, No. 3, pp. 88–89, July–September, 1982.
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Feigin, V.I. Sharp estimates of the remainder in the spectral asymptotic for pseudodifferential operators in Rn . Funct Anal Its Appl 16, 233–235 (1982). https://doi.org/10.1007/BF01081609
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DOI: https://doi.org/10.1007/BF01081609