Spirillum winogradskyi Podkopaeva et al. 2009 Podkopaeva D. Grabovich M. Kuever J. Lysenko A.M. Tourova T.P. Kolganova T.V. Dubinina G. Proposal of Spirillum winogradskyi sp. nov., a novel microaerophilic species, an emended description of the genus Spirillum and Request for an Opinion regarding the status of the species Spirillum volutans Ehrenberg 1832 2009 59 11 2916 2920 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.009605-0 19625415