L. Noll
Leach, Allison M., Kyle A. Emery, Jessica A. Gephart, Kyle F. Davis, J.W. Erisman, Adrian Leip, Michael L. Pace, et al. 2016. “Environmental Impact Food Labels Combining Carbon, Nitrogen, and Water Footprints”. Food Policy 61: 213-23. doi:10.1016/j.foodpol.2016.03.006.