Tourism in Varna Black sea area – current situation and prospects for development
Sabrieva, Sevdzhan
Protected areas in the Stara planina tourist region – current state and prospects for tourism development
Vasileva, Vanya, Sabrieva, Sevdzhan
Natural tourist resources in Rhodope tourist region
Vasileva, Vanya, Kabakchieva, Dora, Sabrieva, Sevdzhan, Vladev, Dimitar