1. Ewart , op cit.(11).
2. Power technologies and the advance of science, 1700–1825;Cardwell;Technology and Culture
3. Wollaston W. H. , “On the force of percussion” (Bakerian Lecture), Philosophical Transactions of the Royal Society, 1806, Part 1, 13.
4. On the use of the principle of living forces in the calculation of the power of machines;Petit;Annales de Chimie et de Physique,1818