M.  Rex, Schulte, K., Zizka, G., Peters, J., Vásquez, R., Ibisch, P. L., and Weising, K., ?Phylogenetic analysis of Fosterella L.B. Sm. (Pitcairnioideae, Bromeliaceae) based on four chloroplast DNA regions?, Molecular Phylogenetics and Evolution, vol. 51, pp. 472?485, 2009.

M.  Rex, Patzolt, K., Schulte, K., Zizka, G., Vásquez, R., Ibisch, P. L., and Weising, K., ?AFLP analysis of genetic relationships in the genus Fosterella L.B. Smith (Pitcairnioideae, Bromeliaceae)?, Genome, vol. 50, pp. 90?105, 2007.