2021

• ESTES Online
• Texas (USA)

2020

• Moscow (Russia) Online

2019

• Prague (Czech Republic) ECTES
• Münsterlingen (Switzerland)
• Zürich (Switzerland)
• Münsterlingen (Switzerland)
• Berlin (Germany) DKOU
• Muscat (Oman) SICOT

2018

• Valencia (Spain) ECTES
• Zürich (Switzerland)
• Berlin (Germany) DKOU
• Montreal (Canada) SICOT
• Moscow (Russia)

2017

• Bucharest (Romania)
• Cape Town (South Africa)                
  

2016

• Rome (Italy)
• Berlin (Germany)
• Moscow (Russia)

2015

• Berlin (Germany)
• Munich (Germany)

2014

• Frankfurt (Germany)

2013 

• Moscow (Russia)

2010

• Aachen (Germany)

2007

• Pittsburgh (USA)

2002

• Leeds (UK)