Alexander Berglund
Stockholm University Stockholm, Sweden
Ib Madsen
University of Copenhagen Copenhagen, Denmark
TBD
mathscidoc:2104.43003
P. J. Myrberg
Helsingfors
TBD
mathscidoc:1701.33772
Hans Triebel
Universität Jena, Jena, DDR
TBD
mathscidoc:1701.332372
A. S. Besicovitch
Trinity College, Cambridge
TBD
mathscidoc:1701.33782