Spectral decomposition of a perturbed differential operator
English version (Springer): Ukrainian Mathematical Journal 41 (1989), no. 8, pp 964-969.
Citation Example: Cheremnykh E. V. Spectral decomposition of a perturbed differential operator // Ukr. Mat. Zh. - 1989. - 41, № 8. - pp. 1118–1123.
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