The equation of state for an electron gas relates pressure, density, and temperature, typically described using the Fermi-Dirac statistics. Key references include Ashcroft's "Solid State Physics," which provides foundational insights into the behavior of electron gases. The pressure of an ideal electron gas can be derived from its density and temperature, reflecting its quantum mechanical nature. For further reading, resources like the provided link to statistical mechanics on Fermi gases can be beneficial. Understanding these relationships is crucial for applications in condensed matter physics and materials science.