Konrad Knopp
Königsberg i. Pr
TBD
mathscidoc:1701.33654
Seçil Gergün
Department of Mathematics, Bilkent University
Iossif V. Ostrovskii
Department of Mathematics, Bilkent University
Alexander Ulanovskii
Høgskolen i Stavanger, P.O. Box 2557, Ullandhaug, Stavanger, Norway
TBD
mathscidoc:1701.332974