Mark Wallinger, Steine, 2010. 1000 stones, numbered with white marker. Mark Wallinger, Steine, 2010. 1000 stones, numbered with white marker. Mark Wallinger, According to Mark (100 chairs), 2010, 100 individual chairs, black marker, white strings Différence et répétition. Difference and repetition. Sources : Vvork, Carlier/Gebauer