454 pyrosequencing analyses of bacterial and archaeal richness in 21 full-scale biogas digesters Sundberg, Carina ; Al-Soud, Waleed A. ; Larsson, Madeleine ; Alm, Erik ; Yekta, Sepehr S. ; Svensson, Bo H. ; Sørensen, Søren J. ; Karlsson, Anna Abstract Publication: FEMS Microbiology Ecology Pub Date: September 2013 DOI: 10.1111/1574-6941.12148 Bibcode: 2013FEMME..85..612S