Aggregate size and architecture determine microbial activity balance for one-stage partial nitritation and anammox., Vlaeminck, Siegfried E., Terada Akihiko, Smets Barth F., De Clippeleir Haydée, Schaubroeck Thomas, Bolca Selin, Demeestere Lien, Mast Jan, Boon Nico, Carballa Marta, et al. , Appl Environ Microbiol, 2010 Feb, Volume 76, Issue 3, p.900-9, (2010)