M. T. Angulo, L. Fridman, and A. Levant, Robust exact finite-time output based control using high-order sliding modes, International Journal of Systems Science, vol.2, issue.11, pp.1847-1857, 2011.
DOI : 10.1002/rnc.1397

. Fig, 13. The estimated?xestimated? estimated?x 2 in red, and the state x 2 in blue

I. Boiko and L. Fridman, Analysis of chattering in continuous sliding-mode controllers, IEEE Transactions on Automatic Control, vol.50, issue.9, pp.1442-1446, 2005.
DOI : 10.1109/TAC.2005.854655

A. Levant, Homogeneity approach to high-order sliding mode design, Automatica, vol.41, issue.5, pp.823-830, 2005.
DOI : 10.1016/j.automatica.2004.11.029

A. Levant, Exact differentiation of signals with unbounded higher derivatives, 2006.

A. Uçar, On the chaotic behaviour of a prototype delayed dynamical system, Chaos, Solitons & Fractals, vol.16, issue.2, pp.187-194, 2003.
DOI : 10.1016/S0960-0779(02)00160-1