Stays

July 2019 - University of Indonesia, Depok, Indonesia; Jember University, Indonesia.
July 2018 - BITS Pilani University, Birla Goa Campus, Goa, India; Vellore Institute of Technology, Chennai, India; Hindustan University, Chennai, India; Loyola College, Chennai, India; Anna University, Chennai, India.
February - March 2018 - School of Mathematical Sciences, National Center for Mathematics, GC University, Lahore, Pakistan.
August 2017 - Universitas Indonesia, Depok, Indonesia; Institut Teknologi Bandung, Indonesia.
July 2017 - The University of Newcastle, Callaghan, Australia; Universitas Pendidikan Ganesha, Singaraja, Bali, Indonesia; Hasanuddin University, Makassar, Indonesia.
March 2017 - School of Mathematical Sciences, National Center for Mathematics, GC University, Lahore, Pakistan.
July 2016 – AGH University of Science and Technology, Krakow, Poland.
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.