ISBN 0821826638 books & textbook
Methods of Qualitative Theory of Differential Equations and Related Topics/With Supplement (AMERICAN MATHEMATICAL SOCIETY TRANSLATIONS SERIES 2)
Lerman, Lev M. Polotovskii, G. Shilnikov, Leonid P.
Amer Mathematical Society /2000-10-01 Hardcover / 196 Pages
isbn-10: 0821826638 / isbn-13: 9780821826638