**Study and research
stays**

- March
2016 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - September – October 2015 -
**Institut****Teknologi Bandung,**Indonesia**; Jember University,**Indonesia,**Hasanuddin****University**, Makassar, Indonesia. - December 2014 -
**Kalasalingam****University**, Anand Nagar, India;**SSN College of Engineering**, Chennai, India;**VIT University**, Chennai, India. - March - April
2014 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - February - March
2013 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - November 2012 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - July 2012-
**University****of Indonesia,**Depok, Indonesia. - April - May
2012 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - September - October 2011 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - February - March
2011 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - May 2010 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - March 2009 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - August 2008 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - April 2008 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - January 2008 -
*School**of Science*,**Harbin****Engineering University**, Harbin, China. - October 2007 -
*School**of Mathematical Sciences, National Center for Mathematics*,**GC University**, Lahore, Pakistan. - February 2007 -
**Institut****Teknologi Bandung,**Indonesia;*Faculty**of Mathematics and Natural Sciences*,**University****of Indonesia,**Jakarta, Indonesia**;***School**of Information Technology and Mathematics Sciences*,**University****of Ballarat**, Victoria, Australia. - March - April
2006 -
*School**of Information Technology and Mathematics Sciences*,**University****of Ballarat**, Victoria, Australia.*Department of Computer Science and Software Engineering*,**The****University of Newcastle**, Callaghan, Australia. - December 2004 -
*Department of Mathematics Education*,**Universitas****Jember**, Jember, Indonesia.*Department of Mathematics,***Universitas****Gadjah Mada***,*Yogyakarta, Indonesia. - November 2004 -
*School**of Information Technology and Mathematics Sciences*,**University****of Ballarat**, Victoria, Australia. - July 2004 -
*Departament**de Matematica Aplicada IV*,**Universitat****Politecnica de Catalunya**, Barcelona, Spain. - October 2003 -
*Department of Computer Science and Software Engineering*,**The****University of Newcastle**, Callaghan, Australia. - September 2003 -
*Department of Mathematics*,**Institut****Teknologi Bandung,**Indonesia. - July 2001 -
*Department of Mathematics*,**Institut****Teknologi Bandung,**Indonesia. - June 2001 -
*Department of Computer Science and Software Engineering*,**The****University of Newcastle**, Callaghan, Australia. - August - September 2000 -
*Department of Computer Science and Software Engineering*,**The****University of Newcastle**, Callaghan, Australia. - July 2000 -
*Department of Computer Science*,**Budapest****University of Technology and Economics**, Budapest, Hungary. - September - October
1999 -
*Department of Computer Science and Software Engineering*,**The****University of Newcastle**, Callaghan, Australia. - July 1999 -
*Faculty**of Applied Mathematics,***University****of Mining and Metallurgy,**Krakow, Poland. - May - June
1997 -
*Department of Computer Science and Information Theory*,**Technical****University of Budapest**, Budapest, Hungary. - November 1989 -
*Section**of Mathematics,***Bergakademia****Freiburg,**Freiburg, Germany.