Ahmad VU, Iqbal S, Nawaz SA, Choudhary MI, Farooq U, Ali ST, Ahmad A, Bader S, Kousar F, Arshad S, Tareen RB (2006)
Isolation of four new pterocarpans from Zygophyllum eurypterum (Syn. Z. atriplicoides) with enzyme-inhibition properties
Chem Biodivers 3: 996

Ahmad VU, Khan A, Farooq U, Kousar F, Khan SS, Nawaz SA, Abbasi MA, Choudhary MI (2005)
Three new cholinesterase-inhibiting cis-clerodane diterpenoids from Otostegia limbata
Chem Pharm Bull (Tokyo) 53: 378