Aiping Wang

The classification of self-adjoint boundary conditions of differential operators with two singular endpoints☆

Jiong Sun, Anton Zettl, A. Zettl, 2011 .

Characterization of Domains of Self-Adjoint Ordinary Differential Operators II

Jiong Sun, Anton Zettl, A. Zettl, 2009, Results in Mathematics.

The classification of self-adjoint boundary conditions: Separated, coupled, and mixed

Jiong Sun, Anton Zettl, A. Zettl, 2008 .