1990/2-4; 1991 - 2002/je 1-4; 2003/1-3; 2004/1, 2, 4 + Sonderheft; 2005/1-4; 2006/1-3; 2007/1-3; 2008/1-4, 2009/1-4 + Sonderheft, 2010-2017/1-4