Workshop on Radicals of Rings and Related Topics, Warsaw (2--8 August, 2009)

21th International Conference on Near-rings and Near-fields 2009, Vorau (07/26--08/01, 2009)

20th International Conference on Near-rings and Near-fields 2007, Linz (07/23--07/27, 2007)

International Conference on Algebra and Its Applications, Tainan (December 19—December 24, 2005)

2005 Nearring and Nearfield Conference, Chi-Tou (July 31—August 6, 2005)

Algebra Conference in Memory of Kostia Beidar, Tainan (03/06/2005—03/12/2005)

AAA68 Workshop on General Algebra, Dresden (06/10/2004—06/13/2004)

2003 Nearring and Nearfield Conference, Hamburg (07/27/2003—08/03/2003)

AAA62 - Workshop on General Algebra, Linz (06/14/2001--06/17/2001)

Third Tainan Algebra Workshop, Tainan (06/26/2001--07/01/2001)

2001 Near Ring and Near Field Conference, Harrisonburg (07/22/2001--07/28/2001)