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♦ 1Comparative breeding biology of Hen Harrier and Montagus Harrier: an 8-year study in north-eastern France, A. MILLON, J.-L. BOURRIOUX, C. RIOLS & V. BRETAGNOLLE, Ibis (2002), 144, 94105
♦ 2Food habits of Zamenis longissimus (Laurenti, 1768) (Reptilia: Serpentes: Colubridae) in Bieszczady (south-eastern Poland), BARTŁOMIEJ NAJBAR, Vertebrate Zoology 57 (1) 2007, 73-77