I. A. Bizyaev, “Ob odnom obobschenii sistem tipa Kalodzhero”, Nelineinaya dinam., 10:2 (2014), 209–212
I. A. Bizyaev, “On a generalization of systems of Calogero type”, Communications in Mathematical Analysis, 2:2 (2014), 233–236
Yu. A. Grigor'ev, V. A. Khudobakhshov, A. V. Tsiganov, “Separation of variables for some systems with a fourth-order integral of motion”, Theoret. and Math. Phys., 177:3 (2013), 1680–1692
Harris, P.A., Garra, R., “Analytic solution of nonlinear fractional Burgers-type equation by invariant subspace method”, Nonlinear Studies, 20:4 (2013), 471-481, arXiv: 1306.1942