Biographie × Christine SONVILLA, Marc GRAF, Robert HAASMANN Autriche http://www.sonvilla-graf.comExpositionL´ours brun en Europe Centrale – Cohabitation (im)possible? / Brown bears in Central Europe – Coexistence (im)possible?BooksSur la piste de l'ours × Author : Christine Sonvilla, Marc Graf ⋅⋅⋅⋅ Publisher : Terre SauvageDie Rückkehr der Bären × Author : Marc Graf, Christine Sonvilla ⋅⋅⋅⋅ Publisher : National Geographic GermanyUnter wilden Bären × Author : Christine Sonvilla, Marc Graf, Robert Haasmann ⋅⋅⋅⋅ Publisher : Frederking & Thaler