beteiligt an den Grafikbörsen:
7//1978, 8//1979, 10//1982, 12//1984, 13//1985, 14//1986, 15//1987, 25//2000, 26//2001, 27//2002, 28//2004, 29//2006, 30//2008, 31//2011, 32//2012, 33//2014, 34//2016, 35//2018