M. Ahmed, N., S. Flefil, N., I. Tayel, S., A. Mahmoud, S., Soliman, A. (2019). 'Biological treatment of ammonia using biofloc system for Oreochromis niloticus fish', Egyptian Journal of Aquatic Biology and Fisheries, 23(4), pp. 639-657. doi: 10.21608/ejabf.2019.60912