Tzonev, Rossen, Department of Ecology and Environmental Protection, Sofia University “St. Kliment Ohridski”, Faculty of Biology, 8 Dragan Tzankov Blvd., Sofia 1164, Bulgaria, Bulgaria

• Hacquetia Vol. 10 No. 1 (2011): Hacquetia - Articles
  Saxifrago ferdinandi-coburgi-Seslerietum actarovii – a new association from the subalpine belt of the Slavianka (Orvilos) Mts. (Bulgaria )
  Abstract  PDF (Slovenščina)