●   Grabovich M,Gavrish E,Kuever J,Lysenko AM,Podkopaeva D,Dubinina G (2006). Proposal of Giesbergeria voronezhensis gen. nov., sp. nov. and G. kuznetsovii sp. nov. and reclassification of [Aquaspirillum] anulus, [A.] sinuosum and [A.] giesbergeri as Giesbergeria anulus comb. nov., G. sinuosa comb. nov. and G. giesbergeri comb. nov., and [Aquaspirillum] metamorphum and [A.] psychrophilum as Simplicispira metamorpha gen. nov., comb. nov. and S. psychrophila comb. nov. Int. J. Syst. Evol. Microbiol. 56, 569-76.
●   Hylemon PB,Wells Jr JS,Krieg NR,Jannasch HW (1973). The genus Spirillum: A taxonomic study. Int. J. Syst. Bacteriol. 23, 340-380.
●   Williams MA,Rittenberg SC (1957). A taxonomic study of the genus Spirillum Ehrenberg. Int. Bull. Bacteriol. Nomencl. Taxon. 7, 49-112.