C. F. Bracciali, T. E. Perez, “Bivariate orthogonal polynomials, 2D Toda lattices and Lax-type pairs”, Appl. Math. Comput., 309 (2017), 142–155
K. Maeda, “Nonautonomous ultradiscrete hungry Toda lattice and a generalized box-ball system”, J. Phys. A-Math. Theor., 50:36 (2017), 365204
M. A. Lapik, “Ekstremalnaya mera i vneshnee pole v dvuparametricheskikh vektornykh zadachakh ravnovesiya logarifmicheskogo potentsiala”, Preprinty IPM im. M. V. Keldysha, 2016, 115, 20 pp.