TY - BOOK AU - Aspremont, Jean d' TI - Formalism and the sources of international law: a theory of the ascertainment of legal rules SN - 9780199682263 U1 - 341.1 PY - 2013/// CY - United Kingdom. PB - Oxford University Press. N1 - Introduction -- The concept and the rationale of formalism in international law -- The emergence of formal law-ascertainment in the theory of the sources of international law -- The critiques of formal law-ascertainment in the theory of the sources of international law -- Deformalization of law-ascertainment in contemporary theory of the sources of international law -- Lessons from the discontent with formalism -- The configuration of formal ascertainment of international law : the source thesis -- The foundations of formal ascertainment of international law : the social thesis -- Concluding remarks : ascertaining international legal rules in the future ER -