# Linear isothermal regularity

The **linear isothermal regularity** was discovered by Parsafar in 1991. It suggests that vs is linear. This led to a new Van der Waals like equation of state (Ref. 2 Eq. 8):

## References[edit]

- Gholam Abbas Parsafar "Deriving the Equation of State for Liquids and Extension of the Principle of Corresponding States", Journal of Sciences, Islamic Republic of Iran
**2**pp. 111-123 (1991) - Gholam Abbas Parsafar and E. A. Mason "Linear isotherms for dense fluids: a new regularity", Journal of Physical Chemistry
**97**pp. 9048-9053 (1993) - Mohammad Shokouhi and Gholam Abbas Parsafar "A new equation of state derived by the statistical mechanical perturbation theory", Fluid Phase Equilibria
**264**pp. 1-11 (2008)