The WTO 's reading of the GATT Article XX chapeau: A disguised restriction on environmental measures Author Gaines S. Journal/Series University of Pennsylvania Journal of International Economic Law | Vol. 22(4); 739 - 862; 124 p. Date 2001 Source IUCN (ID: ANA-071244) Publisher | Place of publication University of Pennsylvania, Law School | Philadelphia, PA, USA Document type Article in periodical Language English Field of application International Subject Environment gen. Keyword International trade