Yanka Prodanova and Todor Kundurzhiev
Pages: 1-12
Kristiyan Korelov
Pages: 24-32
Galina V. Astratova and Maxim A. Kocherian
Pages: 13-23
Yana Vasileva
Pages: 33-45
NATURAL AND TECHNICAL SCIENCES SECTION
Pavel Hristov and Emiliyan Petkov
Pages: 46-52
Tanya Avramova
Pages: 62-69
Maria G. Georgieva
Pages: 99-110
Tanya Avramova
Pages: 111-121
Evstati L. Lefterov
Pages: 53-61
Mariya R. Armyanova
Pages: 70-89
Tanya Avramova
Pages: 90-98
Pavlina Nikolova
Pages: 122-140