Science without Borders. Proceedings of the Humboldt Kolleg Varna, September 18-21, 2019. Faber Publishing House, 2020.
25 years Humboldt Union in Bulgaria
Almanah der Bulgarischen Humboldtianer
The Alexander von Humboldt Foundation – Bonn, Germany – a presentation in Bulgarian
Research opportunities in Germany with the support of the Alexander von Humboldt Foundation – a presentation in Bulgarian
