Theoretical Physics, thermodynamics and statistical mechanics of condensed matter systems: exact calculations involving the two-dimensional Ising model, solid-liquid transitions in systems of small ...

A dynamic equilibrium is formed in a reversible reaction when the rates of the forward and reverse reaction are equal and the amounts of the reactants and the products remains constant.

Merton, Robert C. "A Simple Model of Capital Market Equilibrium with Incomplete Information." Journal of Finance 42, no. 3 (July 1987): 483–509.

Andrabi, Tahir, Natalie Bau, Jishnu Das, Asim Ijaz Khwaja, and Naureen Karachiwalla. "Crowding in Private Quality: The Equilibrium Effects of Public Spending in Education." NBER Working Paper Series, ...