Sylvain Carpentier, “Compatible Hamiltonian operators for the Krichever–Novikov equation”, Comptes Rendus. Mathématique, 355, no. 7, 2017, 744
I T Habibullin, A R Khakimova, M N Poptsova, “On a method for constructing the Lax pairs for nonlinear integrable equations”, J. Phys. A: Math. Theor., 49, no. 3, 2016, 035202
Jipeng Cheng, Lihong Wang, Jingsong He, “Recursion Operators for KP, mKP and Harry Dym Hierarchies”, JNMP, 18, no. 1, 2021, 161
A.V. Mikhailov, J.P. Wang, “A new recursion operator for Adlerʼs equation in the Viallet form”, Physics Letters A, 375, no. 45, 2011, 3960
J. P. Wang, “Representations of sl(2, ℂ) in category O and master symmetries”, Theor Math Phys, 184, no. 2, 2015, 1078
Ziemowit Popowicz, “Odd Hamiltonian structure for supersymmetric Sawada–Kotera equation”, Physics Letters A, 373, no. 37, 2009, 3315
Matteo Casati, Jing Ping Wang, “Recursion and Hamiltonian operators for integrable nonabelian difference equations”, Nonlinearity, 34, no. 1, 2021, 205
S C Anco, E D Avdonina, A Gainetdinova, L R Galiakberova, N H Ibragimov, T Wolf, “Symmetries and conservation laws of the generalized Krichever–Novikov equation”, J. Phys. A: Math. Theor., 49, no. 10, 2016, 105201
F. Khanizadeh, A. V. Mikhailov, Jing Ping Wang, “Darboux transformations and recursion operators for differential-difference equations”, Theor Math Phys, 177, no. 3, 2013, 1606
Agustín Caparrós Quintero, Rafael Hernández Heredero, “Formal recursion operators of integrable nonevolutionary equations and Lagrangian systems”, J. Phys. A: Math. Theor., 51, no. 38, 2018, 385201