V. Vulchev

Grapevine Plant Genetic Resources-Improvement, Preservation and Biodiversity

A. Atanassov, I. Tsvetkov, M. Jankulova, 2005 .

Balkan Vegetation Database: historical background, current status and future perspectives

S. Boch, S. Georgiev, Ilona Knollová, 2016 .

Beech forest communities in Bulgaria

M. Chytrý, A. Ganeva, V. Vulchev, 2006 .

Classification of the relict forest communities of Palla’s Black Pine (Pinus nigra subsp. pallasiana) in Bulgaria

V. Vulchev, R. Tzonev, Chavdar Gussev, 2018, Hacquetia.