(based on Untitled, 1963, Donald Judd)
oil on linen, 30 x 30 cm, Private Collection
(based on Untitled Nr. 1, 1998, Agnes Martin)
oil on linen, 30 x 30 cm, Private Collection
(based on Abstract Painting, 1960, Ad Reinhardt)
oil on linen, 30 x 30 cm, Private Collection