Tchekalarova, Jana D.
Ivanova, Natasha
Atanasova, Dimitrina
Pechlivanova, Daniela M.
Lazarov, Nikolai
Kortenska, Lidia
Mitreva, Rumiana
Lozanov, Valentin
Stoynev, Alexander
Funding for this research was provided by:
National Research Centre (EG) (DTK 02/56 2009-2012)