2871 - Approximation of functions of several variables and imbedding theorems |
2872 - Approximation theory : proceedings of a symposium held at Lancaster, July 1969 |
2873 - Approximation theory. I : proceedings of an international symposium conducted by the University of Texas and the National Science Foundation at Austin, Texas, January 22-24, 1973 |
2874 - Approximation theory. II : proceedings of an International Symposium conducted by the University of Texas, Austin, Texas, January 18-21, 1976 |
2875 - Approximations spectrales de problèmes aux limites elliptiques |
2877 - Arbeiten zur informationstheorie. I. Zweite berichtige Auflage |
2878 - Arbeiten zur informationstheorie. II |
2879 - Arbeiten zur Informationstheorie. III E-Entropie und E-Kapazität von Mengen in Funktionalräumem |
2880 - Arbeitstagung Bonn, 1984 |





