1. Families of Exponentials;Avdonin,1995
2. Exponential bases in Sobolev spaces in control and observation problems for the wave equation;Avdonin;Proc. Roy. Soc. Edinburgh Sect. A,2000
3. Riesz bases of exponentials and divided differences;Avdonin;St. Petersburg Math. J.,2002
4. Linear Operators, Part III;Dunford,1971