
“Libertarian Propositions on Violence Within and Between Nations: A Test Against Published Research Results," The Journal of Conflict Resolution, 29, Sage Publications, (September, 1985): pp. 419-455. https://www.hawaii.edu/powerkills/DP85.HTM
Quoted in Elitism or Populism: Pick Your Poison http://econlog.econlib.org/archives/2006/11/elitism_or_popu.html, by Arnold Kling (November 12, 2006)
“Libertarian Propositions on Violence Within and Between Nations: A Test Against Published Research Results," The Journal of Conflict Resolution, 29, Sage Publications, (September, 1985): pp. 419-455. https://www.hawaii.edu/powerkills/DP85.HTM
Postscript (July 1973)
Anarchism : A History of Libertarian Ideas and Movements (1962)
Zero Aggression Principle ("ZAP"), from "Who is a Libertarian?"
Variant: A libertarian is a person who believes that no one has the right, under any circumstances, to initiate force against another human being, or to advocate or delegate its initiation. Those who act consistently with this principle are libertarians, whether they realize it or not. Those who fail to act consistently with it are not libertarians, regardless of what they may claim.
"Key Concepts of Libertarianism" (1 January 1999) http://www.cato.org/pub_display.php?pub_id=5758
Source: 1990s, Liberty A to Z (2004), p. 127
“[W]hat makes a libertarian in America a “right-winger” makes him a “liberal” in most of Europe.”
2010s, 2018, Socialism is So Hot Right Now (2018)
Source: “What’s wrong with Libertarianism”, p. 445