Authors: Christov, R Bankova, V Elenkov, I Handjieva, N Spassov, S Popov, SS

Citation: R. Christov et al., Stereo effects in the chemical ionization mass spectrometry of galanthamine epimers, EUR MASS SP, 5(2), 1999, pp. 77-80

Authors: Kujumgiev, A Tsvetkova, I Serkedjieva, Y Bankova, V Christov, R Popov, S

Citation: A. Kujumgiev et al., Antibacterial, antifungal and antiviral activity of propolis of different geographic origin, J ETHNOPHAR, 64(3), 1999, pp. 235-240