1. Boltzmann, L. The Second Law of Thermodynamics (Populare Schriften. Essay No. 3 (Address to Imperial Academy of Science in 1886)). Reprinted in English in Theoretical Physics and Philosophical Problems, Selected Writings of L. Boltzmann (D. Riedel, Dordrecht, 1905).
2. Lotka, A. J. Contribution to the energetics of evolution. Proc. Natl Acad. Sci. USA 8, 147–151 (1922).
3. Brody, S. Bioenergetics and Growth (Reinhold, New York, 1945).
4. Van Valen, L. Evolution as a zero-sum game for energy. Evol. Theor. 4, 289–300 (1980).
5. McNab, B. K. The Physiological Ecology of Vertebrates: A View from Energetics (Cornell Univ. Press, Ithaca, 2002).