[1]: http://en.wikipedia.org/wiki/Deontological_ethics#Kantianism
[1]: http://en.wikipedia.org/wiki/Deontological_ethics#Kantianism
Kantianism is probably the most famous from of all the deontological ethical systems. But structurally the NAP and the categorical imperative serve the same purposes in Kantianism and nirvana's libertarianism, respectively: they provide the principle by which all other actions are held to account.
I do _not_ mean deontological in a derogatory sense. I mean it descriptively in contrast to consequentialism.
Edit: To quote your own source, "The non-aggression principle, also known as the non-aggression axiom and zero aggression principle, is an ethical stance which states that any initiation of force is illicit and contrary to natural law. It is the basic moral axiom of deontological libertarianism, most upheld by philosophers such as Robert Nozick and Murray Rothbard.[1]
[1]: https://en.wikipedia.org/wiki/Deontological_ethics#Non-aggre...