Sampling and Interpolating Sequences for Multiband-Limited Functions and Exponential Bases on Disconnected Sets. Kristian Seip, Yurii I. Lyubarskii (1997) The journal of Fourier analysis and applications [[Elektronische Ressource]]
Subsystems of the Schauder system whose orthonormalizations are Schauder bases for L p [ 0 , 1 ] Robert E. Zink (1989) Colloquium Mathematicae