1. D. C. Mattis, “The few-body problem on a lattice,” Rev. Modern Phys. 58 (2), 361–379 (1986).
2. Adv. Soviet Math.;A. I. Mogilner,1991
3. Transl. Math. Monogr.;V. A. Malishev,1995
4. R. A. Minlos and A. I. Mogilner, “Some problems concerning spectra of lattice models,” in Schrödinger Operators, Standard and Nonstandard, Dubna, 1988 (World Scientific, Teaneck, NJ, 1989), pp. 243–257.
5. M. Reed and B. Simon, Methods of Modern Mathematical Physics. Vol. IV: Analysis of Operators (Academic Press, New York–London, 1979).