JIMÉNEZ PAUTE, R. C.; CEVALLOS VALLEJO, A. S.; CISNEROS PEREZ, P. A. Natural products as drugs source in the Ecuador´s essential medicines list: Natural product in the Ecuador´s essential medicines list. ACI Avances en Ciencias e Ingenierías, v. 13, n. 2, p. 12, 22 Nov.2021.