Visitor at London School of Economics and Political Sciences, London, UK 12th September to 19th September 2018.
Post-Doctoral Researcher at International Institute for Applied Systems Analysis (IIASA), Austria, 2017-2019
Visiting fellow at Centre population et développement (CEPED) Paris, French September 2016.
Guest Researcher position in Max Planck Institute for Demographic Research, Rostock, Germany May, and August & September 2016; December 2014; June-July 2013; December 2010; December 2009-January 2010.
Visiting Fellow in Vienna Institute for Demographic Research, Vienna, Austria during 18 December to 21 December 2013.
Researcher position at Institut National d’etudes Demo- graphiques (INED), Paris, French during 10- 25th September, 2013 [Not accepted]
Fellow Researcher position in Institut National d’etudes Demo- graphiques (INED), Paris, French during 16-29 October, 2011.
Visiting Scholar in Max Planck Institute for Demographic Research, Rostock, Germany during 19 October, 2008 to 19 March, 2009.