Untitled (Three works), 1986

Andrea Festa Fine Art

Bleibild, 1988

Jahn und Jahn

Untitled , 1990

Almine Rech

Untitled , ca. 1990

Almine Rech

Wandmalereien Bern, 1990-2000

ARTEDIO

Bastille 6, 2009

Galerie Lelong & Co.

Untitled V, 2001

ARTEDIO

Untitled, 2000

Galerie Lelong & Co.

Pi, 1995

MLTPL

Ohne Titel, 2007

Galerie Elisabeth & Klaus Thoman

Untitled, 1994

Galerie Lelong & Co.

Untitled, 2003

Galería Daniel Cardani

Untitled, 2005

Almine Rech

Untiled (Blue Woodcut), 1990

MLTPL

Untitled, 1987

Aaron Galleries

Untitled, 2000

Galerie Lelong & Co.

Carnegie, 1989

Phillips

Untitled, 2000

Galerie Bromer

Untitled , ca. 1996

Almine Rech

Untitled , 1990

Almine Rech

Untitled, 1989

Galeria Filomena Soares

See You Again # 9, 1994

Carolina Nitsch Contemporary Art

Untitled II, 2004

ARTEDIO

Six Rectangles, 1991

MLTPL

Untitled, 1994

Galerie Thomas

Untitled, 2006

Galeria Filomena Soares

See You Again # 14, 1994

Carolina Nitsch Contemporary Art

Untitled, 2005

Galerie Lelong & Co.

Untitled, 2003

Galeria Filomena Soares

Untitled, 1996

Wentrup