B. J.  Adams, ?Species concepts and the evolutionary paradigm in modern nematology?, Journal of Nematology, vol. 30, pp. 1?21, 1998.

B. J.  Adams, Burnell, A. M., and Powers, T. O., ?A phylogenetic analysis of \emph{Heterorhabditis} ({Nematoda:Rhabditidae}) based on {Internal} {Transcribed} {Spacer} 1 {DNA} sequence data?, Journal of Nematology, vol. 30, pp. 22?39, 1998.

B. J.  Adams, ?The species delimitation uncertainty principle?, Journal of Nematology, vol. 33, pp. 73?82, 2001.

S. A.  Nadler, Adams, B. J., Lyons, E. T., DeLong, R. L., and Melin, S. R., ?Molecular and morphometric evidence for separate species of \emph{Uncinaria} ({Nematoda}: {Ancylostomatidae}) in {California} sea lions and northern fur seals: {Hypothesis} testing supplants verification?, Journal of Parasitology, vol. 86, pp. 1099?1106, 2000.

S. A.  Nadler, Carreno, R. A., Adams, B. J., Kinde, H., Baldwin, J. G., and Mundo-Ocampo, M., ?Molecular phylogenetics and diagnosis of soil and clinical isolates of \emph{Halicephalobus} \emph{gingivalis} ({Nematoda}: {Cephalobina}: {Panagrolaimoidea}), an opportunistic pathogen of horses?, International Journal for Parasitology, vol. 33, pp. 1115?1125, 2003.

S. A.  Nadler, De Ley, P., Mundo-Ocampo, M., Smythe, A. B., Stock, S. P., Bumbarger, D., Adams, B. J., De Ley, I. T., Holovachov, A., and Baldwin, J. G., ?Phylogeny of {Cephalobina ({Nematoda})}: Molecular evidence for recurrent evolution of probolae and incongruence with traditional classifications?, Molecular Phylogenetics and Evolution, vol. 40, pp. 696?711, 2006.

T. O.  Powers, Todd, T. C., Burnell, A. M., Murray, P. C. B., Fleming, C. C., Szalanski, A. L., Adams, B. J., and Harris, T. S., ?The r{DNA} internal transcribed spacer region as a taxonomic marker for nematodes?, Journal of Nematology, vol. 29, pp. 441?450, 1997.