Alexei Zhedanov, “Umbral “classical” polynomials”, Journal of Mathematical Analysis and Applications, 420, no. 2, 2014, 1354
Mario Bruschi, Francesco Calogero, “More, or less, trivial matrix functional equations”, Aequat. Math., 90, no. 3, 2016, 541
H W Braden, “Rigidity, functional equations and the Calogero-Moser model”, J. Phys. A: Math. Gen., 34, no. 11, 2001, 2197
Дж. Г. Б Байатт-Смит, J. G. B Byatt-Smith, Гарри Уайтинг Браден, Harry Whiting Braden, “О функциональном уравнении Руджинарса”, ТМФ, 133, no. 3, 2002, 353
Ekaterina Shulman, “On rational addition theorems”, Journal of Mathematical Analysis and Applications, 278, no. 2, 2003, 255
Elena Yu. Bunkova, “Hirzebruch Functional Equation: Classification of Solutions”, Proc. Steklov Inst. Math., 302, no. 1, 2018, 33
H.W. Braden, Encyclopedia of Mathematical Physics, 2006, 425
Lingxia Liu, “Existence of analytic solutions of an iterative functional equation”, Applied Mathematics and Computation, 217, no. 17, 2011, 7245
H.W. Braden, A. Marshakov, “Singular phases of Seiberg–Witten integrable systems: weak and strong coupling”, Nuclear Physics B, 595, no. 1-2, 2001, 417
H. W. Braden, N. A. Nekrasov, Integrable Structures of Exactly Solvable Two-Dimensional Models of Quantum Field Theory, 2001, 35