Antibacterial, antifungal and cytotoxic activity of terrestrial cyanobacterial strains from Serbia Autori: Z. Svirčev, Dragana Četojević-Simin, J. Simeunović, M. Karaman, D. Stojanović Časopis: Science in China Series C: Life Sciences DOI: 10.1007/s11427-008-0115-8