Remark on the spectrum structure of the two-dimensional Schrödinger operator with the periodic potential
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- Popov, V.N. & Skriganov, M.M. J Math Sci (1984) 24: 239. doi:10.1007/BF01087244
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In the remark it is shown that it is possible to omit arithmetical conditions on the period-lattice of the potential in the Schrödinger operator, which were assumed in the previous works of the second author.