Citation: H. Helness et H. Odegaard, Biological phosphorus and nitrogen removal in a sequencing batch moving bed biofilm reactor, WATER SCI T, 43(1), 2001, pp. 233-240
Citation: H. Helness et H. Odegaard, Biological phosphorus removal in a sequencing batch moving bed biofilm reactor, WATER SCI T, 40(4-5), 1999, pp. 161-168