ABHINAV, K.; CHOUDHURY, A. G.; GUHA, P. Bäcklund Transformation and Quasi-Integrable Deformation of Mixed Fermi-Pasta-Ulam and Frenkel-Kontorova Models. Discontinuity, Nonlinearity, and Complexity, v. 7, n. 1, p. 31–41, 17 Aug.2026.