1. Zur Konvergenzbeschleunigung von Orthogonal-Doppelreihen. Dissertation, Siegen 1983
2. and , Accelerating the rate of convergence of bivariate Fourier expansions. In: Approximation Theory IV, Eds.: , . Academic Press, New York 1983
3. Differential- und Integralrechnung, Band III. VEB Dt. Verl. d. Wiss., Berlin 1982
4. and , Table of integrals, series, and products. Academic Press, New York 1980
5. The theory of Approximation Amer. Math. Soc. Colloq. Publ.. Vol. XI. Amer. Math. Soc., Providence, R.I. 1930