O. Espejo

Antimicrobial activity of three Mexican Gnaphalium species.

P. Joseph-Nathan, J. Villagómez‐Ibarra, M. Sánchez, 2001, Fitoterapia.

Variation of some secondary metabolites in juvenile stages of three plant species from tropical rain forest

O. Espejo, R. Amo, J. Ramirez, 1986, Journal of Chemical Ecology.

Spirostanic diosgenin precursors from Dioscorea composita tubers

O. Espejo, Helgi Jung, F. Giral, 1982 .

Bioequivalence study of nitrofurantoin tablets: in vitro-in vivo correlation

O. Espejo, Helgi Jung, A. Dorantes, 1986 .

Alkaloids from the flowers of Erythrina americana

O. Espejo, M. Aguilar, F. Giral, 1981 .

Allelopathic potential of corn pollen

A. Anaya, O. Espejo, J. Hernández, 1983, Journal of Chemical Ecology.