Mary Ellen O’Connell, “Historical Development and Legal Basis,” in The Handbook of International Humanitarian Law, Third Edition, ed. Fleck (Oxford: Oxford University Press, 2013), pp. 41–42 (sections 148–151).
Prosecutor v. Tadić, ICTY, Appeals Chamber, Case No. IT-94-1, Decision on Defence Motion for Interlocutory Appeal on Jurisdiction, October 2, 1995
Declaration Renouncing the Use, in Time of War, of Explosive Projectiles Under 400 Grammes in Weight (St. Petersburg Declaration), December 1868.
Laurie Blank and Gregory Noone, International Law and Armed Conflict: Fundamental Principles and Contemporary Challenges in the Law of War (New York: Wolters Kluwer, 2013), pp. 3–33 [skim].
Daniel Thürer, International Humanitarian Law: Theory, Context, Practice (The Hague: The Hague Academy of International Law, 2011), pp. 21–25, 39–58, 68–74 [skim].