• Elena Hlodec – Painter, Graphic Artist and Designer
• Les Ateliers Intaglio – Art * Loisir * Culture – Evry, Île-de-France
• Ex Libris, Artists & Collectors – Books, Bibliomania, Ex Libris and the art of engraving
• A.I.E. Assoziacione Italiana Ex Libris
• A.F.C.E.L.  Association Française pour la Connaissance de l’Ex-Libris
• GRAPHIA- BOEKMERK
• Exlibriswereld
• American Society of Bookplate Collectors & Designers
• The International Ex Libris Museum, Sint-Niklaas, Belgium
• Museo Ex Libris Mediterraneo di Ortona
• Cervantes Ex Libris
• InPressione – grafica inSIEME – Colloquia Graphica et Exlibristica