1. P. Tempesta and G. Tondo, “Haantjes algebras and diagonalization,” arXiv:1710.04522v2 [math-ph] (2017).
2. P. Tempesta and G. Tondo, “Haantjes manifolds of classical integrable systems,” arXiv:1405.5118v3 [nlin.SI] (2014).
3. I. M. Gelfand and I. Zakharevich, “Webs, Lenard schemes, and the local geometry of bi-Hamiltonian Toda and Lax structures,” Selecta Math., n.s., 6, 131–183 (2000).
4. F. Magri and C. Morosi, “A geometrical characterization of integrable Hamiltonian systems through the theory of Poisson–Nijenhuis manifolds,” Quaderno S, 19, Università di Milano, Milano (1984).
5. Y. Kosmann-Schwarzbach and F. Magri, “Poisson–Nijenhuis structures,” Ann. Inst. H. Poincarè Phys. Théor., 53, 35–81 (1990).