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Pop , Ioan Mihai és Chiriac, Silviu és Bereczky, Leonardo és Berde, Lajos és Sandu, Radu Mihai (2013) Evaluarea riscurilor ridicate de prezența urșilor în zonele locuite. Green Steps Kiadó, Brassó.
Pop, Ioan Mihai és Sallay, Alexandra és Bereczky, Leonardo és Chiriac, Silviu (2012) Land use and Behavioral Patterns of Brown Bears in the South-Eastern Romanian Carpathian Mountains: A Case Study of Relocated and Rehabilitated Individuals. PROCEDIA ENVIRONMENTAL SCIENCES, 14. pp. 111-122.
Bereczky, Leonardo és Pop, Ioan Mihai és Chiriac, Silviu (2011) TROUBLE-MAKING BROWN BEAR URSUS ARCTOS LINNAEUS, 1758 (MAMMALIA: CARNIVORA) – BEHAVIORAL PATTERN ANALYSIS OF THE SPECIALIZED INDIVIDUALS. TRAVAUX DU MUSEUM NATIONAL D HISTOIRE NATURELLE GRIGORE ANTIPA, 54 (2). pp. 541-554. ISSN 1223-2254
