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She has published more than 200 legal articles and several books on European and private law ; she gives speeches at numerous international conferences in Slovenia and abroad ( e.g. conferences on Common Frame of Reference ( Münster , Osnabrück , Trier ) ; Luxembourg : Europäischer Juristentag 2011 ; Trier : Jahrestagung der Gesellschaft für Rechtsvergleichung 2011 ; Berlin : Humboldt-Universität , 2012 ; Salzburg : 24 .
 Luxembourg
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Luxembourg