Michael V. Basin Alexander G. Loukianov Rocío Hernández-Fabián An optimal sliding mode-like regulator for nonlinear polynomial systems. 1909-1916 2011 42 Int. J. Syst. Sci. 11 https://doi.org/10.1080/00207721.2010.545491 db/journals/ijsysc/ijsysc42.html#BasinLH11