TY - BOOK AU - Motreanu, Dumitru AU - Pavel, Nicolae H. TI - Tangency, flow invariance for Differential Equations, and Optimization Problems T2 - Monographs and Textbooks in pure and Applied Mathematics SN - 0824773411 U1 - 515.355 PY - 1999/// CY - New York PB - Marcel Dekker , INC. KW - DIFFERENTIAL EQUATIONS KW - FLOWS KW - MATHEMATICAL OPTIMIZATION KW - NONLINEAR ER -