K. M.  Cameron, Chase, M. W., Whitten, W. M., Kores, P., Jarrell, D., Albert, V., Yukawa, T., Hills, H., and Goldman, D. H., ?A Phylogenetic Analysis of the Orchidaceae: Evidence from rbcL Nucleotide Sequences?, American Journal of Botany, vol. 86, no. 2, pp. 208 - 224, 1999.

K. M.  Cameron, Chase, M. W., Whitten, W. M., Kores, P., Jarrell, D., Albert, V., Yukawa, T., Hills, H., and Goldman, D. H., ?A Phylogenetic Analysis of the Orchidaceae: Evidence from rbcL Nucleotide Sequences?, American Journal of Botany, vol. 86, no. 2, pp. 208 - 224, 1999.