- Ludwig D. Faddeev, Leon A. Takhtajan, Hamiltonian Methods in the Theory of Solitons, 1987, 281
- Rossen Ivanov, Tony Lyons, “Integrable Models for Shallow Water with Energy Dependent Spectral Problems”, JNMP, 19, № Supplement 1, 2012, 72
- Vladimir Stefanov Gerdjikov, Aleksander Aleksiev Stefanov, Iliya Dimov Iliev, Georgi P Boyadjiev, Aleksandr Olegovich Smirnov, Vladimir Borisovich Matveev, Maxim Valentinovich Pavlov, “Операторы рекурсии и иерархии модифицированных уравнений Кортевега-де Фриза, связанные с алгебрами Каца-Муди $D_4^{(1)}$, $D_4^{(2)}$ и $D_4^{(3)}$”, Теоретическая и математическая физика, 204, № 3, 2020, 332
- P.E.G. Assis, L.A. Ferreira, “The Bullough–Dodd model coupled to matter fields”, Nuclear Physics B, 800, № 3, 2008, 409
- L.V. Bogdanov, E.V. Ferapontov, “Projective differential geometry of higher reductions of the two-dimensional Dirac equation”, Journal of Geometry and Physics, 52, № 3, 2004, 328
- J Inoguchi, S Udagawa, “Affine spheres and finite gap solutions of Tzitzèica equation”, J. Phys. Commun., 2, № 11, 2018, 115020
- Hon-Wah Tam, Zuo-nong Zhu, “(2+1)-dimensional integrable lattice hierarchies related to discrete fourth-order nonisospectral problems”, J. Phys. A: Math. Theor., 40, № 43, 2007, 13031
- Nan Liu, Xiao-Yong Wen, Ling Xu, “Dynamics of bright and dark multi-soliton solutions for two higher-order Toda lattice equations for nonlinear waves”, Adv Differ Equ, 2018, № 1, 2018, 289
- Hui Ma, Derchyi Wu, “Twisted hierarchies associated with the generalized sine-Gordon equation”, Journal of Mathematical Physics, 52, № 9, 2011, 093704
- Robert Conte, “Invariant painlevé analysis of partial differential equations”, Physics Letters A, 140, № 7-8, 1989, 383