Enright, M.R., McInerney, J.O., Griffin, C.T. 2003. Characterization of endospore-forming bacteria associated with entomopathogenic nematodes, Heterorhabditis spp., and description of Paenibacillus nematophilus sp. nov. Int. J. Syst. Evol. Microbiol. 53 : 435-441.