by Salib, Josline Y, Michael, Helana N, Eskande, Emad Fawzy
Published in Pharmacognosy research (01.01.2013)

by Michael, Helana N, Awad, Hanem M, El-Sayed, Nabil H, Pare, Paul W
Published in Pharmaceutical biology (01.05.2010)

by Salib, Josline Y., Michael, Helana N.
Published in Phytochemistry (Oxford) (01.07.2004)

by Salib, Josline Y., Michael, Helana N.
Published in Natural product communications (01.11.2007)

by El-Sayed, Nabil H., Michael, Helana N., Kandil, Fayez E., Isha, Moheb S., Mabry, Tom J.
Published in Biochemical systematics and ecology (01.10.1994)