Second-order differential-operator equations with discrete spectrum on the whole axis
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Publication:1164766
DOI10.1007/BF01708836zbMath0486.34019OpenAlexW2085805638MaRDI QIDQ1164766
Publication date: 1981
Published in: Mathematical Notes (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1007/bf01708836
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