Participation in international projects:

• UNDP-UNESCO Project on the Seismicity of the Balkan Region (1971-1974);

UNDP-UNESCO Project "Earthquake Risk Reduction in the Balkan Region"

(RER/79/014), Working Group D;

• CBGA - Projects on the Engineering Geological Map of the Carpatho-Balkan

Region and the Destructive Geological Processes in the same region;

• UNESCO - Project "Expert Assessment of Land Subsidence Related to

Hydrogeological and Engineering Geological Conditions in the Regions of

Sofia, Skopje and Tirana" (1996-2000);

• Projects between Bulg. Academy of Sciences and Armenian and Czech Academies

of Sciences and National Scientific Center in Italy on the Problems of the

Landslides and Slope Stability.