Comments on the article “On the propagation of harmonic plane waves under the two-temperature theory” [P. Puri, P.M. Jordan, Int. J. Eng. Sci. 44 (2006) 1113–1126]

This short note presents some comments on the article “On the propagation of harmonic plane waves under the two-temperature theory” [Puri, P., & Jordan, P. M. (2006). On the propagation of harmonic plane waves under the two-temperature theory. International Journal of Engineering Science, 44, 1113–1126]. Errors in some equations and figures in this article are pointed out and their correct forms are presented.