Nevanlinna Theory, Normal Families, and Algebraic Differential Equations (Universitext)

Springer

The Theory of Differential Equations: Classical and Qualitative (Universitext)

Springer

Theory and Numerics of Differential Equations: Durham 2000 (Universitext)

Springer

Springer

Spectral and Scattering Theory for Ordinary Differential Equations: Vol. I: SturmLiouville Equations...