Equilibrate is a chemical equilibrium solver which is based on EasyChem, which itself is a clone of the NASA CEA tool (described in Gordon and McBride 1994).
If this code is used in an academic publication, please cite Gordon and McBride (1994). Also, cite EasyChem in the following way
Lei and Mollière (2024), in prep. https://easychem.readthedocs.io/en/latest/.