Institution	Period
Nordita (Copenhagen, Denmark)	Oct. – Dec. 1993
	Nov. 1994
	Sep. – Dec. 1996
Physics Department of the University of Crete (Heraklion, Greece)	Aug. – Nov. 1995
	Aug. 1997
Theoretical Astrophysics group of CRAL at the ENS-Lyon (France)	Jan. – Apr. 1996
	Dec. 1997
	Mar. – May 1998
	Apr. – June 1999
	May – July 2000
	Apr. – June 2001
	Apr. – July 2002
	May – June 2003
	June – Aug. 2004
	May – June 2005
	24 May – 22 July 2006
	24 Apr. – 22 June 2007
	12 May – 12 July 2008
	23 May – 22 July 2009
	10 May – 10 July 2010
	25 April – 25 June 2011
	10 April – 10 June 2012
	6 May – 6 July 2013
	6 May – 4 July 2014
	14 May – 10 July 2015
	2 May – 2 July 2016
	7 May – 30 June 2017
	13 May – 11 July 2018
	13 May – 16 July 2019
MPE (Garching, Germany)	Mar. – Apr. 1997
CAMK (Warsaw, Poland)	Oct. – Nov. 1998
	Nov. 1999
	Feb. 2000
	Nov. 2000
	Nov. 2001
	May 2002
Department of Astronomy, Cornell (Ithaca, NY, USA)	Aug. – Sep. 2002
	15 Sep. – 13 Nov. 2003
	16 Jan. – 31 Mar. 2006
Department of Astronomy and Astrophysics, Pontificia Universidad Catolica de Chile	Sep. – Oct. 2005
IAAT, Universität Tübingen (Tübingen, Germany)	1 – 13 Oct. 2007
	7 – 18 Apr. 2008
	17 Feb. – 15 Mar. 2012
Observatoire de Lyon, CRAL (France)	2 Oct. – 30 Nov. 2011
	1 Oct. – 1 Nov. 2012
	20 Jan. – 22 Feb. 2013
	16 Sep. – 15 Nov. 2013
	16 Nov. – 16 Dec. 2014
	16 Feb. – 14 Mar. 2015
	11 Jan. – 11 Feb. 2016
	18 Jan. – 17 Feb. 2017