m-vegetation #1; 2003-2005 private collection, Düsseldorf dimensions: 105 x 85 cm; medium: acrylics, oil on canvas     m-vegetation #2; 2007-2008 private collection, Düsseldorf dimensions: 130 x 107 x 4 cm; medium: acrylics, oil on plywood     m-vegetation #3; 2011-2012 private collection, Düsseldorf dimensions: 115 x 156 x 23,5 cm; medium: acrylics, oil, silcon on plywood     m-vegetation #4; 2013 dimensions: 134 x 110 x 66 cm; medium: acrylics, oil, silicon on plywood