Autor: |
Pashev, Aleksandar1 (AUTHOR) aleksandar.pashev@mu-pleven.bg, Petrov, Valentin1 (AUTHOR) al.ppesheva@abv.bg, Pesheva, Aleksandrina1 (AUTHOR) drstavreva@yahoo.com, Petrova, Lidiya2 (AUTHOR) lidiia.petrova-trifonova@mu-pleven.bg, Ilieva, Kalina2 (AUTHOR) kalina.st.ilieva@gmail.com, Stavreva, Galya1 (AUTHOR) teodora.aleksandrova@mu-pleven.bg, Atanasova, Milena2 (AUTHOR) milenaar2001@yahoo.com, Cheshmedzhieva, Diana3 (AUTHOR) dvalentinova@chem.uni-sofia.bg, Altankov, George4 (AUTHOR) altankov@abv.bg, Aleksandrova, Teodora1 (AUTHOR) |