J. Molina-Burgos, J. A. Jácome-Burgos, and J. Suárez-López, “CASE STUDY ON NITRIFICATION RATES IN A NON-STIRRED MEMBRANE-AERATED BIOFILM REACTOR OPERATED UNDER LAMINAR REGIME”, J. Urb. Environ. Engng, vol. 11, no. 2, pp. 193–201, Jun. 2018.