Wesley F. Costa

Tannin composition of barbatimão species.

P. H. Ferri, H. D. Ferreira, D. O. Guimarães, 2002, Fitoterapia.

Seasonal variation in the content of tannins in barks of barbatimão species

P. H. Ferri, H. D. Ferreira, S. C. Santos, 2006 .