E. F. Beckenbach
Richard Arratia
George Pólya
COCOON '98 (1998 Taipei, Taiwan)
Ch. A. Charalambides
Srivastava, Jagdish Narain
Martin Aigner
E. H. L. Aarts
Juraj Hromkovič
Zvi Galil
Albert Nijenhuis
FroCoS 2002 (2002 Santa Margherita Ligure, Italy)
Eduardo R. Caianiello
Paul-Hermann Zieschang
Martin Grötschel