1. The Mechanical Equivalent of Heat;The Correlation and Conservation of Forces,1864
2. Mayer, J. R., Ann. d. Chem. 42: 233 (1842).
3. Priestley, J., Phil. Tran. 62: 147 (1772).
4. Lavoisier, A. L., Mem. Acad. Sci. 1777: 185 (1777).
5. Young, T., Phil. Trans. 1809: 1 (1809).