For citations:

Lakaev S.N., Abdukhakimov S.Kh., Khasanov A.B. Two-fermion lattice Schrödinger operators with first and second nearest-neighboring-site interactions. Nanosystems: Physics, Chemistry, Mathematics. 2026;17(2):143-152. (In Russ.) https://doi.org/10.17586/2220-8054-2026-17-2-143-152