V. E. Adler, “Necessary integrability conditions for evolutionary lattice equations”, Theor Math Phys, 181, no. 2, 2014, 1367
R N Garifullin, R I Yamilov, D Levi, “Classification of five-point differential-difference equations”, J. Phys. A: Math. Theor., 50, no. 12, 2017, 125201
R. N. Garifullin, R. I. Yamilov, “On the Integrability of Lattice Equations with Two Continuum Limits”, J Math Sci, 252, no. 2, 2021, 283
Giorgio Gubbiotti, “Lagrangians and integrability for additive fourth-order difference equations”, Eur. Phys. J. Plus, 135, no. 10, 2020, 853
Ismagil Habibullin, Natalya Zheltukhina, “Discretization of Liouville type nonautonomous equations preserving integrals”, JNMP, 23, no. 4, 2021, 620
S Ya Startsev, “Relationships between symmetries depending on arbitrary functions and integrals of discrete equations”, J. Phys. A: Math. Theor., 50, no. 50, 2017, 50LT01
Всеволод Эдуардович Адлер, Vsevolod Eduardovich Adler, “Необходимые условия интегрируемости для эволюционных уравнений на решетке”, Теоретическая и математическая физика, 181, no. 2, 2014, 276
I. T. Habibullin, A. R. Khakimova, “Integrals and characteristic algebras for systems of discrete equations on a quadrilateral graph”, Theor Math Phys, 213, no. 2, 2022, 1589
Vsevolod Eduardovich Adler, “Интегрируемые Мeбиус-инвариантные эволюционные цепочки второго порядка”, Функциональный анализ и его приложения, 50, no. 4, 2016, 13
R. N. Garifullin, A. V. Mikhailov, R. I. Yamilov, “Discrete equation on a square lattice with a nonstandard structure of generalized symmetries”, Theor Math Phys, 180, no. 1, 2014, 765