- R. Sahadevan, S. Khousalya, “Belov–Chaltikian and Blaszak–Marciniak lattice equations: Recursion operators and factorization”, Journal of Mathematical Physics, 44, № 2, 2003, 882
- Wang Zhen, Zou Li, Zhang Hong-Qing, “Solitary Solution of Discrete mKdV Equation by Homotopy Analysis Method”, Commun. Theor. Phys., 49, № 6, 2008, 1373
- Shi Shen-Yang, Fu Jing-Li, Huang Xiao-Hong, Chen Li-Qun, Zhang Xiao-Bo, “The Lie symmetries and Noether conserved quantities of discrete mechanical systems with variable mass”, Chinese Phys. B, 17, № 3, 2008, 754
- Peter A. Clarkson, Pavel Winternitz, The Painlevé Property, 1999, 591
- H. Ullah, S. Islam, M. Idrees, M. Fiza, “Solution of the Differential-Difference Equations by Optimal Homotopy Asymptotic Method”, Abstract and Applied Analysis, 2014, 2014, 1
- Hakeem Ullah, Saeed Islam, Ilyas Khan, Sharidan Shafie, Mehreen Fiza, Alena Talkachova, “Formulation and Application of Optimal Homotopty Asymptotic Method to Coupled Differential - Difference Equations”, PLoS ONE, 10, № 4, 2015, e0120127
- R. Sahadevan, S. Khousalya, L. Nalini Devi, “Nonlocal symmetries and recursion operators: Partial differential and differential–difference equations”, Journal of Mathematical Analysis and Applications, 308, № 2, 2005, 636
- I T Habibullin, A R Khakimova, “On the recursion operators for integrable equations”, J. Phys. A: Math. Theor., 51, № 42, 2018, 425202
- R N Garifullin, R I Yamilov, D Levi, “Classification of five-point differential–difference equations II”, J. Phys. A: Math. Theor., 51, № 6, 2018, 065204
- D Levi, R Yamilov, “Non-point integrable symmetries for equations on the lattice”, J. Phys. A: Math. Gen., 33, № 26, 2000, 4809