Griffith A. A., « The phenomena of rupture and flow in solide », Philosophical Transactions of the Royal Society of London, a, vol. 221, , p. 163–198 (lire en ligne).
Article original : James R. Rice, « A Path Independent Integral and the Approximate Analysis of Strain Concentration by Notches and Cracks », Journal of Applied Mechanics, no 35, , p. 379-386 (lire en ligne).