Most of our recent papers have been linked to the web page of the corresponding journals. You should be able to download them directly if you or your institute have electronic access to these journals. In case you have difficulties downloading any of our papers, please contact us and we will gladly send reprints to you. Your interest in our work is highly appreciated.
Before 1995 1995-2000 2001-2002 2003-2004 2005-2006 2007-2008
2009-2010 2011-2012 2013-2014 2015-2016 2017-2018 2019-2020