1. M. Dumas (1832), cited from [1878Deb]“.
2. V. Regnault, “On the Specific Heat of Elements and Compounds”,Ann. Chim. Phys. Ser. 3, 1, 129–207 (1841) in French.
3. H. Kopp, “Investigations of the Specific Heat of Solid Bodies”,Philos. Trans. R. Soc. (London), 155, 71–202 (1865).
4. H. Debray, “On a New Oxidation Product of Lead and Some Dissociation Phenomena”,C.R. Acad. Sci. Paris, 86, 513–517 (1878) in French.
5. Camelley and Walker,J., 53, 59 (1888) cited from [56But].