“Activated charcoal and graphite for the micropropagation of Cattleya bicolor Lindl. and a orchid double-hybrid ‘BLC Pastoral Innocence’ - doi: 10.4025/actasciagron.v34i2.12257” (2011) Acta Scientiarum. Agronomy, 34(2), p. 157–161. doi:10.4025/actasciagron.v34i2.12257.