Villegas, J., and J. Cervantes. “Second Virial Coefficient of a Series of Polysiloxanes: The Effect of Side Groups and Molecular Weight”. Revista Mexicana De Física, vol. 52, no. 6, Jan. 2006, pp. 507-0, https://rmf.smf.mx/ojs/index.php/rmf/article/view/3496.