Blacklight, 2012 - 2017
Squares, 2011 - 2017
Boxes, 2012 - 2013
Neon Stage, 2011
Discs, 2006 - 2008
Circles, 1999 - 2009
Dual colors, 1999 - 2008
Lyrical Neon, 2006
Licht vor Licht, 1978 - 1983
Cubes, 1973 - 1986
Step-On, 1975
Light in a box, 1993
Sirius, 1980 - 1983
Studien 1972 - 1976
