Grunditz, C; Dalhammar, G (2000). «Development of nitrification inhibition assays using pure cultures of Nitrosomonas and Nitrobacter». Water research35 (2): 433-40. PMID11228996. doi:10.1016/S0043-1354(00)00312-2.|fechaacceso= requiere |url= (ayuda)
Grunditz, C; Dalhammar, G (2000). «Development of nitrification inhibition assays using pure cultures of Nitrosomonas and Nitrobacter». Water research35 (2): 433-40. PMID11228996. doi:10.1016/S0043-1354(00)00312-2.|fechaacceso= requiere |url= (ayuda)