Henry Helson
University of California, Berkeley, California, U.S.A.
TBD
mathscidoc:1701.331322
A. Kriegl
Universität Wien, Wien, Austria
P. W. Michor
Universität Wien, Wien, Austria
TBD
mathscidoc:1701.331738
H. Riesel
Royal Institute of Technology, Imperial College
R. C. Vaughan
Royal Institute of Technology, Imperial College
TBD
mathscidoc:1701.332575