1. RÉAUMUR, R. A., F. de, L'Art de Convertir le Fer Forge en Acier, Paris, 19722, see SMITH, C. S., Sources for the History of the Science of Steel: 1532–1786, Society for the History of Technology and the MIT Press, Mass., 1968, p. 125.
2. MADHAVA, N. M., Ph. D. Dissertation, Univ. of Maryland, 1975.
3. Extension of Griffith's theory of rupture to three dimensions
4. STONESIFER, F. R., Ph. D. Dissertation, Univ. of Maryland, 1975.