| Institution | Country | Period |
| Caucasus University | Georgia | 2021.11.01- 2021.11.05 |
| Vasil Levski National Military University (Natsionalen Voenen Universitet “Vasil Levski”) | Bulgaria | 2019.08.18-2019.08.24 |
| Foundation for Information Society | Hungary | 2019.04.14- 2019.04.20 |
| University of Minho | Portugal | 2018-10-15 iki 2018-10-19 |
| Travniko tarptautinis universitetas | Bosnija ir Hercegovina | 2018-06-10 iki 2018-06-16 |
| Politechnika Śląska (Silezijos technikos universitetas | Poland | 2018-05-28 iki 2018-05-31 |
| Compania “Luigi Vanvitelli” universitetą | Italy | 2017-11-12 iki 2017-11-18 |
| Mansoura University | Egypt | 2017-05-22 – 2017-05-28 |
| Reykjavik University | Iceland | 2017-05-07 – 2017-05-13 |
| Mathematical Institute Of The Serbian Academy Of Sciences And Arts | Serbia | 2017-03-28 – 2017-04-01 |
| University of Lubljana | Slovenia | 2017.01.29-2017.02.01 |
| Inellerts BV | Olandija (Nyderlandai) Utrechtas | 2016 07 31 – 2016 08 06 |
| Oy Teboil Ab | Finland | 2015 09 13 – 2015 09 19 |
| Fobiss Holding B.V. | Nedherlands | 2015 08 16 – 2015 08 22 |
| Cyprus University of Technology | Cyprus | 2015 04 30 – 2015 05 07 |
| Varna Technical University | Bulgaria | 2013 12 01 – 2013 12 07 |
| Cottbus Technical university | Germany | 2013 06 30 – 2013 07 06 |
| Italian Computer Associasion (AICA). | Italy | 2012 07 15 – 2012 07 21 |
| Free University of Bolzano. | Italy | 2012 04 02 – 2012 04 06 |
| Stockholm Royal University | Sweden | 2011 05 22 – 2011 05 28 |
| University of Malta | Malta | 2011 09 11 – 2011 09 17 |
| Cyprus Computer Society | Cyprus | 2011 09 14 – 2011 09 20 |
| University of Illinois | USA | 2011 11 10 – 2011 11 19 |
| Trondheim University | Norway | 2009 05 11 – 2009 05 15 |
| University of Tampere | Finland | 2007 10 02 – 2007 10 07 |
| Brandenburg Technical University (Cottbus) | Germany | 2007 05 06 – 2007 05 13 |