Nate Hagans and Kenneth Mulder, Gund student and fellow respectively, wrote Chapter 12, A Framework for Energy Alternatives: Net Energy, Liebig's Law and Multi-criteria Analysis in the book, Biofuels, solar and wind as renewable energy systems: benefits and risks, edited by David Pimentel. This chapter talks about the idea that "net energy analysis, particularly EROEI, can measure the biophysical properties of a resources progression over time".