R. Ayres and V. Voudouris, The economic growth enigma: Capital, labour and useful energy? Energy Policy, pp.16-28, 2014.

R. Kümmel, The Second Law of Economics, p.11, 2011.
DOI : 10.1007/978-1-4419-9365-6

R. Kümmel, R. Ayres, and D. Lindenberger, Thermodynamic laws, economic methods and the productive power of energy, Journal of Non-Equilibrium Thermodynamics, vol.35, issue.2, pp.145-179, 2010.
DOI : 10.1515/jnetdy.2010.009