M. E. Arce-Urbina, C. Hun-Opfer, and J. F. Mata-Segreda, “The aqueous extract of <i>Triumfetta semitriloba</i> (Tiliaceae) does not inhibit the in-vitro hydrolytic activity of the major pancreatic enzymes”, Rev. Biol. Trop., vol. 51, no. 2, pp. 313–316, Jun. 2003.