Swiss artist. Between 1965 and 1977, he lived and worked in Paris. In 1977, he went to live in New York and, between 1978 and 1985, he made mostly monochromatic works, and, after 1985, abstract paintings. His first one-man show was held at the Rive Droite Gallery in Paris in 1959. After this many other exhibitions followed in Milan, Marseilles, New York, Geneva and Cologne. Since 1966, he has also participated in several collective exhibitions in different countries.