Here's a list you can Google:
Agam, Yaacov
Albers, Josef
Anuszkiewicz, Richard
Calderara, Antonio
Cruz-Diez, Carlos
Escher, M. C.
Fleischmann, Adolf
Fruhtrunk, Günter
Hughes, Patrick
Ibbison, Michael
Juneau, Denis
Le Parc, Julio
Ludwig, Wolfgang
Mack, Heinz
Mavignier, Almir
Molinari, Guido
Morellet, François
Noland, Kenneth
Parola, Rene
Poons, Lawrence
Riley, Bridget
Schuyff, Peter
Sihvonen, Oli
Soto, Jesús-Rafael
Stanczak, Julian
Stella, Frank
Taaffe, Philip
Takis, Vassilakis
Tousignant, Claude
Vasarely, Victor
von Graevenitz, Gerhard
