Zekker, I., E. Rikmann, A. Mandel, M. Raudkivi, K. Kroon, L. Loorits, J. Mihkelson, A. Seiman, L. Daija, T. Tenno, and T. Tenno. “SMOOTH TEMPERATURE DECREASING FOR NITROGEN REMOVAL IN COLD (9-15° C) ANAMMOX BIOFILM REACTOR TESTS”. European Scientific Journal, ESJ, Vol. 11, no. 10, Sept. 2015, https://eujournal.org/index.php/esj/article/view/6174.