1
by SCHEMPP., ZELLER.
Published 1979
Birkhäuser

2
by SCHEMPP., ZELLER.
Published 1985
Birkhäuser
Table of Contents: ... -- Square functions in the theory of Cesaro summability of double orthogonal series -- Generalized Melkes...

3
by CHUI., SCHEMP., ZELLER.
Published 1989
Birkhäuser
...Multivariate Approximation Theory forms a rapidly evolving field in Applied Mathematics. The reason...