Zamora, Stephen, Is there Customary International Economic Law?, 32 GYIL 1989, at 9 et seq.

The field of international monetary law is a challenging (and at times confusing) combination of treaties, customary practices, decisions (both formal and informal) of international organizations, and informal rules, all of which have been characterized as "quasi-orders"99 or "rules of the game".100 Defining a rule for customary international law in this mix is a daunting task.

[Subsequently set out in detail.]

99Schwarzenberger (note 4 [Georg Schwarzenberger, The Principles and Standards of International Economic Law, in: Recueil des Cours (RdC) 117 (1966/I), 7-98 (12)]), 63
100Dam (note 3 [Kenneth Dam, The Rules of the Game: Reform and Evolution in the International Monetary System, Chicago 1982]), 1-6.

Referring Principles
Trans-Lex Principle: V.2.4 - Distribution of currency transfer risk
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