●   Xie CH,Yokota A (2005). Phylogenetic analysis of Alysiella and related genera of Neisseriaceae: proposal of Alysiella crassa comb. nov., Conchiformibium steedae gen. nov., comb. nov., Conchiformibium kuhniae sp. nov. and Bergeriella denitrificans gen. nov., comb. nov. J. Gen. Appl. Microbiol. 51, 1-10.
●   Kuhn DA,Gregory DA (1978). Emendation of Simonsiella muelleri schmid and description of Simonsiella steedae sp. nov., with designations of the respective proposed neotype and holotype strains. Curr. Microbiol. 1, 11-14.
●   (1979). Validation of the publication of new names and new combinations previously effectively published outside the IJSB. List n° 2. Int. J. Syst. Bacteriol. 29, 79-80.