Marinov, Stefan, Aleksander Kolev, and Ivan Ivanov. Modeling a Managed Communication Environment In Jubilee Scientific Conference with International Participation ?Modern Aviation Training Trends?. D. Mitropolia, 2017.

Marinov, Stefan, Aleksander Kolev, and Ivan Ivanov. Modeling of a managed communication environment In Jubilee scientific conference with international participation "Contemporary trends in aviation training". D. Mitropolia, 2017.

Marinov, Stefan, Aleksander Kolev, and Ivan Ivanov. Modelling a Managed Communication Environment In Anniversary Scientific Conference ?Modern Aviation Training Trends. Dolna Mitropolia, Bulgaria, 2017.