Machairas, I. 2002.
The necessity of transborder co-operation as a condition for conservation of the natural and cultural importance of western-central Rhodope mountain range.
In: Protected Areas in the Southern Balkans - Legislation, Large Carnivores, Transborder Areas: 205-213.
Arcturos (Psaroudas, S., Ed.) & Hellenic Ministry of the Environment, Physical Planning, and Public Works 2002.

General information and arguments for transboundary protected areas in the Balkans.

Machairas_2002_Transborder_Cooperation.pdf

Chilikova, A. 2002.
Pilot Area: W. Rhodope, Pirin, and Slavianka (Orvilos) - Bulgaria.
In: Protected Areas in the Southern Balkans - Legislation, Large Carnivores, Transborder Areas: 193-204.
Arcturos (Psaroudas, S., Ed.) & Hellenic Ministry of the Environment, Physical Planning, and Public Works 2002. 

Book chapter describing the protected areas W.Rhodope, Pirin, and Slavianka in Bulgaria.

Chilikova_2002_Pilot_area_in_Bulgaria.pdf

Korakis, Y. 2002.
Description and protection status of Mount Grammos (Northwest Greece).
In: Protected Areas in the Southern Balkans - Legislation, Large Carnivores, Transborder Areas: 157-167.
Arcturos (Psaroudas, S., Ed.) & Hellenic Ministry of the Environment, Physical Planning, and Public Works 2002. 

Presentation of the region around the Mount Gammos in northwestern Greece.

Korakis_2001_Mount_Grammos_Greece.pdf

Georgiadis, L. 2001.
Voras - Kaimakchalan (Greece): presentation of the natural characteristics and the protection status.
In: Protected Areas in the Southern Balkans - Legislation, Large Carnivores, Transborder Areas: 183-191.
Arcturos (Psaroudas, S., Ed.) & Hellenic Ministry of the Environment, Physical Planning, and Public Works 2002. 

Presentation of the Voras mountains in Greece and FYR of Macedonia and the protection status of this region.

Georgiadis_2001_Voras_Greece.pdf