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)

by Mohamed, Mansour, Kamal Eldin, Maha, Khayyal, Ahmed, Abdel-Hamid, Hossam Eldin, Mohamed, Doaa
Published in The Egyptian journal of chest diseases and tuberculosis (01.10.2019)