Nguyen, A., M. Le, P. Nguyen, N. Dang, and H. To. “Investigating the Species of Microorganisms from Activated Sludge for Handling Phenol Contaminated-Air Streams in Biotrickling Filter”. Science and Technology Development Journal, Vol. 16, no. 3, Sept. 2013, pp. 96-05, doi:https://doi.org/10.32508/stdj.v16i3.1624.