By Grootendorst, Albert W., Aarts, Jan, Bakker, Miente, Erné, Reinie
By Rudolph, Gerd, Schmidt, Matthias
By Barreira, Luis, Valls, Claudia
By Lindenstrauss, Joram, Milman, Vitali D.
By Buchberger, Bruno
By Ziegler, Gunter M.
By Schaefer, Helmut H.
By Bonsall, F. F.
By Joy Hancox
By Hossenfelder, Sabine
By Armstrong, M.A.
By Gibilisco, Stan
By Ackland, Jenny
By Ioan M. James
By Mark J.D. Hamilton
By Alexandru Dimca
By Graham Everest, Thomas Ward
By Leonor Godinho, Jose Natario
By Marcos Dajczer, Ruy Tojeiro
By Jurgen Jost
By Nicolas Bergeron
By Ian M. Chiswell
By Michele Audin, Mihai Damian, Reinie Erne
By Siegfried Bosch
By A.N. Pressley
By Andrew Pressley
By Francoise Dal'Bo
By Clara Loeh
By Liviu I. Nicolaescu