By Rudolph, Gerd, Schmidt, Matthias
By Barreira, Luis, Valls, Claudia
By Buchberger, Bruno
By Ziegler, Gunter M.
By Joy Hancox
By Armstrong, M.A.
By Gibilisco, Stan
By Neumann, Peter M.
By Farin, Gerald
By O'Rourke, Joseph
By MU120 Course Team
By Doebner, Heinz-Dietrich, Hennig, Jörg-Dieter
By Jenkins, Gerald
By Siegfried Bosch
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 Duncan Marsh
By Shoshichi Kobayashi, Eriko Shinozaki Nagumo, Makiko Sumi Tanaka
By Duncan Marsh (D-Cubed Ltd, Cambridge UK)
By D.L. Johnson
By Masanori Morishita