von Ramona Teuber ; Teuber, Ramona (Bearb.): Geographical indications of origin as a tool of product differentiation, The case of coffee : , 2008 ( Discussion papers . - Gie├čen : ZEU;33 )
The Semantic Web -- ISWC 2002, First International Semantic Web Conference, Proceedings s. 2342 : Springer, 2002. - ISBN 3-540-43760-6