...and are looking for something other than links to mises.org, I can highly recommend Michael Sandel's Harvard course "Justice." He covers a broad variety of conceptions of justice and rights, from philosophers from antiquity through to the modern era (yes, including libertarianism). If you're interested in learning about a wide variety of philosophical perspectives, it's well worth your time.
The full 12-part series is available on Youtube.
[ame="http://www.youtube.com/watch?v=kBdfcR-8hEY&feature=list_related&playnext=1&list=SP30C13C91CFFEFEA6"]Justice: What's The Right Thing To Do? Episode 01 "THE MORAL SIDE OF MURDER" - YouTube[/ame]
The full 12-part series is available on Youtube.
[ame="http://www.youtube.com/watch?v=kBdfcR-8hEY&feature=list_related&playnext=1&list=SP30C13C91CFFEFEA6"]Justice: What's The Right Thing To Do? Episode 01 "THE MORAL SIDE OF MURDER" - YouTube[/ame]