Biler P., Nadzieja T. Problems and Examples in Differential Equations

Marcel Dekker, 1992. - 244 Pages. ISBN: 0824786378A collection of 764 problems in ordinary differential equations and 384 problems in partial differential equations, ranging from routine exercises to challenging research projects. For almost every problem the authors provide hints, references, and/or partial answers.excellent.
This practical textbook provides a very good reading with excellent bibliographical references for under-graduate and post-graduate level students as well as for specialists working in differential equations.