b'\n_START_ARTICLE_\nMethanobacteria\n_START_SECTION_\nOtras lecturas\n_START_PARAGRAPH_\nBrusa, T.; Conca, R.; Ferrara, A.; Ferrari, A.; Pecchioni, A. (14 de diciembre de 2005). \xc2\xabThe presence of methanobacteria in human subgingivai piaque\xc2\xbb. Journal of Clinical Periodontology 14 (8): 470-471.'