3Ulrich Magnus, "Causation in German Tort law," in J. Spier, ed. Unification of Tort Law: Causation, Hague - Lindon - Boston: Kluwer Law International,2000.
4Suzanne Galand - Carval, "Causation Under French Law", in J. Spier, ed. Unification of Tort Law: Causation, Hague - Lindon -Boston: Kluwer Law International, 2000.
5James E. Viator,“When Cause In Fact Is More Than a Fact : The Malone - Green Debate on The Role of Policy in Determining Factual Causation in Tort Law, ”Louisiana Law Review, vol. 44 (May 1984).