TY - Journal of Shandong University(Engineering Science) A1 - Liu Yun-Gang T1 - Finite-time stabilization for a class of first-order nonlinear systems with unknown control direction Y1 - 2009-06-16 JF - Journal of Shandong University(Engineering Science) JO - Journal of Shandong University(Engineering Science) SP - 37 EP - 46 VL - 39 IS - 3 UR - http://gxbwk.njournal.sdu.edu.cn N1 - ER -