L. Hsu

Adaptive visual tracking for motions on smooth surfaces

L. Hsu, A.R. Lopes Zachi, F. Lizarralde, 2001, Proceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228).

Output-feedback sliding mode control of uncertain systems with unknown control direction: A periodic switching function approach

T.R. Oliveira, A.J. Peixoto, L. Hsu, 2008, 2008 International Workshop on Variable Structure Systems.