Diana P. Petkova
Pages: 1-17
Milen E. Dinkov
Pages: 29-44
Elena S. Petkova
Pages: 71-80
Bratoy Koprinarov
Pages: 18-28
Snezhana D. Ivanova and Christian Gotchev
Pages: 45-70
Bratoy Koprinarov and Veselina Atanasova-Georgieva
Pages: 81-88
NATURAL AND TECHNICAL SCIENCES SECTION
Zoya Tsoneva and Anelia Stoyanova
Pages: 89-98
Rositsa R. Radoeva
Pages: 109-115
Mihail Haralampiev
Pages: 117-128
Dinko Hr. Dinkov
Pages: 99-108
Veselin Ivanov, Georgi Arabadzhiev and Marian Pashov
Pages: S-116 Short communication