Josiah Gibbs (1839-1903) begins a two-year long series of papers which discusses phase equilibria, the free energy as the driving force behind chemical reactions, and chemical thermodynamics in general
Editors. "Chemical thermodynamics developed". The Literary Encyclopedia. First published 01 May 2009; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=6346, accessed 21 April 2015.]