15th TC 4 meeting, 24–25 October 2018, Gebze Kocaeli, Turkey

14th TC 4 meeting, 31 October – 1 November 2017, Chisinau, Moldova

13th TC 4 meeting, 18–19 May 2016, Braunschweig, Germany 

12th TC 4 meeting, 6–8 October 2015, Tbilisi, Georgia

11th TC 4 meeting, 21–23 October 2014, Yerevan, Armenia

10th TC 4 meeting, 22–23 October 2013, Baku, Azerbaijan

9th TC 4 meeting, 16–17 October 2012, Minsk, Belarus

8th TC 4 meeting, 28–29 September 2011, Astana, Kazakhstan

7th TC 4 meeting, 29–30 June 2010, Kharkov, Ukraine

6th  TC 4 meeting, 28 April 2009, Braunschweig, Germany