Brian Kogelmann and Stephen Stich’s paper “The Irrelevance of the Impossibility of Pure Libertarianism” has been published in The Journal of Philosophy.
Abstract: In “The Impossibility of Pure Libertarianism” Braham and van Hees prove that four conditions on rights—completeness, conclusiveness, non-imposition, and symmetry—cannot be satisfied simultaneously. If Braham and van Hees’s proof is to have any relevance, at least some prominent libertarians must endorse their four conditions, and libertarianism as a philosophical position must in some way be committed to all the axioms. Generally speaking, however, prominent libertarians do not embrace the completeness and conclusive axioms, there is no reason why they should, and indeed libertarians have strong reasons to reject both conditions. As such, libertarians should not lose any sleep over Braham and van Hees’s proof.
