For citations:

Lakaev S.N., Latipova D.A., Akhmadova M.O. On the existence of the maximum number of isolated eigenvalues for a lattice Schrödinger operator. Nanosystems: Physics, Chemistry, Mathematics. 2025;16(6):737-748. https://doi.org/10.17586/2220-8054-2025-16-6-737-748