sentences:  He has contributed to numerous conferences and symposia, including as key note speaker at "Reflections on Contemporary Printmaking", Portugal 2013, "Impact 7" Australia 2011, "Password", Lybijana 2014 and SNAP3 International Print Symposium.Kloster Bentlage/Germany 2015.He regularly contributes to the journal Print Quarterly (where he is on the editorial board) and Art in Print.