Ralf Bader is one of the brightest young lights in the classical liberal world and the discipline of philosophy. For a relatively new assistant professor at NYU, Bader has already written a lot. See the research tab here for some of his recent works. Bader has also penned a concise and readable introduction to Robert Nozick’s thought that also manages to have substantive depth. I recommend it highly.
In the Nozick book, Bader discusses a rights-based approach to libertarianism and concisely captures its virtue:
In short, adopting a rights-based approach allows us to give a more plausible, more appealing and more robust argument in favor of libertarianism that is not contingent on empirical facts and that cannot easily be avoided by invoking other values.