Tu, Pierre N. V. Dynamical systems : an introduction with applications in economics and biology / Pierre N.V. Tu. - New York : Springer-Verlag, c1992. - xi, 252 p. : ill. ; 25 cm. ISBN: 3540557806 Subjects--Index Terms: Differentiable dynamical systems Economics, Mathematical Biomathematics Dewey Class. No.: 515/.35 / TUP