“All States reserve their right to expel the aliens whose stay in their territory constitutes a threat to public order.” Patrick Dailler and Alain Pellet, Droit international public, Paris, L.G.D.J., 1999, p. 664 [French original].
Taylor, « The Content of the Rule Against Abuse of Rights in International Law », The British Yearbook of International Law, London, Oxford University Press, 1972-1973, p. 350 et 352.