Differential equations : a dynamical systems approach, ordinary differential equations / John H. Hubbard, Beverly H. West. Hubbard, John. West, Beverly Henderson, 1939- Differential equations. Differential equations, Partial. QA371 .H77 1990 515.35 20 HUD Includes bibliographical references and indexes. New York : Springer-Verlag, c1991. c1991. 1991 Text xviii, 350 p. : eng Texts in applied mathematics ; 5 Texts in applied mathematics ; 5.