1. Hans Kelsen, Introduction to the Problems of Legal Theory, translated by Bonnie Litschewski Paulson & Stanley L Paulson (Oxford: Clarendon Press, 1992) [Kelsen, Problems of Legal Theory].
2. Niklas Luhmann, 'Subjektive Rechte, Zum Umbau des Rechtsbewußtseins für die moderne Gesellschaft' in Niklas Luhmann, Gesellschaftsstruktur und Semantik, vol 2 (Frankfurt am Main: Suhrkamp, 1981) 45
3. on the historical background, see e.g. Brian Tierney, 'Dominion of Self and Natural Rights before Locke and After' in Virpi Mäkinen & Petter Korkman, eds, Transformations in Medieval and Early-Modern Rights Discourse (Dordrecht: Springer, 2006) 173
4. more recently, Helge Dedek, 'De Jure Hominis et Homunculi: Rights, Tristram Shandy and the Legal Language of Isolation' in Werner Gephart & Jan C Suntrup, eds, Rechtsanalyse als Kulturforschung (Frankfurt am Main: Vittorio Klostermann, 2015) 59 [Dedek, 'De Jure Hominis et Homunculi'].
5. Kelsen, Problems of Legal Theory, supra note 1 at 95ff.