Mukherjee, D., R. G. Cromley, F. A. Shah, and B. E. Bravo-Ureta. “Optimal Location of Centralized Biodigesters for Small Dairy Farms: A Case Study from the United States”. International Journal of Sustainable Energy Planning and Management, vol. 8, Dec. 2015, pp. 3-16, doi:10.5278/ijsepm.2015.8.2.