Rankine, W. J. MacQ. (1854). "On the geometrical representation of the expansive action of heat, and theory of thermodynamic engines". Proceedings of the Royal Society. 144: 115–175. Miscellaneous Scientific Papers p. 339
Rankine, W. J. MacQ. (1854). "On the geometrical representation of the expansive action of heat, and theory of thermodynamic engines". Proceedings of the Royal Society. 144: 115–175. Miscellaneous Scientific Papers p. 341.