Atila, Bram Bogart, Caille, Dodeigne, Gentils, Gilioli, Guebels, Hamaguchi, Landuyt, Leroy, Lindstrom, maeyer, Mara, Mathieu, Pouget, Raveel, thienpont, Tovar, urculo, Vasarely. (Veranneman,, 1972)