by Khayyal, S E, Ayad, M M, Girgis, A N
Published in Journal of chromatography (01.01.1984)

by Balbaa, S. I, Khafagy, S. M, Khayyal, S. E, Girgis, A. N
Published in Journal of natural products (Washington, D.C.) (01.09.1979)

by Karawya, M.S, Balbaa, S.I, Khayyal, S.E
Published in Planta medica (01.02.1973)

by Khafagy, S.M, Girgis, A.N, Khayyal, S.E, Helmi, M.A
Published in Planta medica (01.05.1972)

by Karawya, M.S, Khayyal, S.E, Youssef, G.F
Published in Planta medica (01.05.1970)

by Karawya, M S, Khayyal, S E, Farrag, N M, Ayad, M M
Published in Acta pharmaceutica Hungarica (01.03.1986)