Influence effect of the reservoir "Gorna Arda" on the mammal fauna. - 2001
Mammal fauna satate in the region of river "Arda" - cascade "Gorna Arda".- 2001
Monitoring of soils, embankments, flora and fauna in the region of "Elacite" - Assessment of bioaccumulation of heavy metals and toxic elements of small mammals monitor species in the region of "Elacite". - 2001
Influence effect of emissions of copper-smelter combine "Pirdop" in the region Pirdop -Zlatitza. - 1999.
Influence of industrial pollution of metallurgic combine - "Kremicovtzi" on some animal species. - 1998