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24 & 25 January 2023: Max-Planck-Institute for Radio Astronomy in Bonn, Germany
8 & 9 February 2022: online meeting
29 April 2021: online meeting
21 November 2020: online meeting
5 May 2020: online meeting
26 June 2019: Jodrell Bank Observatory, UK.
4 October 2018: Instituto de Astrofísica de Andalucia (IAA), Granada, Spain.
19 March 2018: Shanghai Observatory(SHAO), Shanghai, China.
23 May 2017: International Radio Astronomy Center (VIRAC), Ventspils, Latvia.
18 Sep 2016: IAA headquarters, Saint Petersburg, Russia.
9 Feb 2016: Observatorio de Madrid, Madrid, Spain.
26 Jun 2015: DSN Complex, Robledo de Chavela, Spain.
5-6 Oct 2014: Cagliari, Italy.
23-24 Jan 2014: Wettzell,Germany.
10-12 Apr 2013: at Max Planck Institute for Radio Astronomy, Bonn, Germany.
27-28 Jun 2012: at Onsala Space Observatory, Sweden.
29/30 Aug 2011: at Arecibo Observatory, Puerto Rico, USA.
28 Jan 2011: JIVE, Dwingeloo, The Netherlands.
21 Jun 2010: Metsähovi Radio Observatory, Helsinki University of Technology, Finland.
4 Dec 2009: Effelsberg Radio Telescope, Max Planck Institute for Radio Astronomy, Bonn, Germany.
17 Apr 2009: Centre for Astronomy, Nicolaus Copernicus University, Poland.
22 Sep 2008: INAF-IRA, Bologna, Italy.
12 Nov 2007: OAN, Yebes, Spain.
4 Dec 2006: Noto VLBI station, Sicily.
24 March 2006: ASTRON, Dwingeloo, The Netherlands.
1 July 2005: Onsala Space Observatory, Sweden.
22 November 2004: Jodrell Bank Observatory, England.
1 April 2004: Fundamental Station Wettzell, Germany.
30 June 2003 : DSN Complex Madrid, Spain.
27 September 2002 : Bologna, Italy.
25 June 2001 : Bonn, Germany.
October 2000:Torun, Poland
April 2000:Jodrell Bank, UK.
March 1999: IRA, Sicily.
Jun 1998: OSO, Sweden.
Jan 1998: OAN, Madrid, Spain.
June 1997 : Metsahovi, Finland
September 1996: Bologna, Italy
September 1995: Dwingeloo, Netherlands
October 1994: Effelsberg,Germany
September 1993: Torun, Poland.
September 1992: Bonn, Germany.