Saeid Kottb1, Atef A. El-Hela1*Mostafa M. Saleh1, Mohammed M. Ghoneim1,. 2014. “BIOLOGICALLY ACTIVE SECONDARY METABOLITES FROM KALANCHOE TOMENTOSA”. Journal of Biomedical and Pharmaceutical Research 3 (6). http://www.jbpr.in/index.php/jbpr/article/view/332.