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Additional information
Joint Institute of Nuclear Research, Dubna. Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 25, No. 1, pp. 80–86, October, 1975.
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Gavrilenko, G.M., Fedyanin, V.K. Approximation of the spectral density in Anderson's model. Theor Math Phys 25, 992–996 (1975). https://doi.org/10.1007/BF01037644
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DOI: https://doi.org/10.1007/BF01037644