TY - BOOK AU - Clarke,F.H.,et al ED - Ledyaev, Yu.S ED - Stern, R.J ED - Wolenski, P.K TI - Nonsmooth analysis & control theory T2 - Graduate texts in mathematics 178 SN - 9780387983363 U1 - 15.01+15.04 PY - 1998/// CY - New York PB - Springer ER -