M.  Källersjö, Albert, V. A., and Farris, J. S., ?Homoplasy increases phylogenetic structure?, Cladistics, vol. 15, pp. 91?93, 1999.

M.  Källersjö, Farris, J. S., Kluge, A. G., and Bult, C., ?Skewness and permutation?, Cladistics, vol. 8, pp. 275-287, 1992.

J. S.  Farris, Albert, V. A., Källersjö, M., Lipscomb, D., and Kluge, A. G., ?Parsimony jackknifing outperforms neighbor-joining?, Cladistics, vol. 12, pp. 99-124, 1996.