regul eec council march conclud supplementari protocol addit agreement valid princip liechtenstein agreement european econom commun swiss confeder council european commun regard treati establish european econom commun articl thereof regard recommend commiss norwai acced european commun supplementari protocol addit agreement valid princip liechtenstein agreement european econom commun swiss confeder conclud adopt regul articl supplementari protocol addit agreement valid princip liechtenstein agreement european econom commun swiss confeder conclud behalf commun text protocol annex hereto articl presid council author design person empow sign protocol refer articl behalf commun confer power bind commun articl regul enter forc regul bind entireti directli applic member state brussel march council presid ryan date signatur protocol publish offici journal european commun