# Problem books in ODE

I'm studying Ordinary differential equations right now in the level of Hartman's book.

I've never seen problem books in ODE in this level even if you consider it without solutions.

I would like to know if one of you know any problem book in ODE in this level?

Thanks a lot

• I don't know the level of Hartman's book. Isn't there a Schaum's Outline for ODE? Is it suitable? – Gerry Myerson May 12 '13 at 6:13
• @GerryMyerson no, because ODE in Schaum's outline is just solve some differential equations. I'm asking about prove the uniqueness and domain of the solutions, Kineser theorem, etc... – user74141 May 12 '13 at 15:37