For citations:

Muminov M.I., Khurramov A.M., Bozorov I.N. Conditions for the existence of bound states of a two-particle Hamiltonian on a three-dimensional lattice. Nanosystems: Physics, Chemistry, Mathematics. 2022;13(3):237-244. https://doi.org/10.17586/2220-8054-2022-13-3-237-244