1. J. Guild and D. Pollock, Startup of a Full-Scale VERTREAT™ Wastewater Treatment Plant at a Cheese Production Facility, NORAM Engineering and Constructors, Ltd., Vancouver, BC, Canada (2002).
2. J. Guild, D. Pollock, and D. Cameron, Refinery Wastewater Treatment Utilizing the VERTREAT™ Process, Technical Report, NORAM Engineering and Constructors, Ltd., Vancouver, BC, Canada, March (2003).
3. J. Guild, M. Boyle, L. Sasser, D. Pollock, and J. Yoo, VERTAD™—auto-thermophilic aerobic digestion: demonstration-scale test results, Proceedings Water Environment Federation 74th Annual Conference&Exposition, Atlanta, GA (2001).
4. N. K. Shammas and L. K. Wang, Aerobic digestion. In: Biological Treatment Processes, 2nd ed., L. K. Wang, N. C. Pereira, and Y. T. Hung (eds.), Humana Press, Totowa, NJ. pp. 635–669 (2009).
5. US EPA Technology Assessment of the Deep Shaft Biological Reactor, US Environmental Protection Agency, Washington, DC. Technical Report No. EPA/600/2-82-002 (1982).