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FERNÁNDEZ, Maria; ORIA, Javier; SÁNCHEZ, Roberto. Space Use of Adult Spanish Imperial Eagles Aquila adalberti. Acta Ornithologica. 2009-6, roč. 44, čís. 1, s. 17–26. Dostupné online [cit. 2019-08-22]. ISSN0001-6454. DOI10.3161/000164509X464849. (anglicky)
ORTEGA, Enric; MAÑOSA, Santi; MARGALIDA, Antoni. A demographic description of the recovery of the Vulnerable Spanish imperial eagle Aquila adalberti. Oryx. 2009-1, roč. 43, čís. 01, s. 113. Dostupné online [cit. 2019-08-22]. ISSN0030-6053. DOI10.1017/S0030605307991048. (anglicky)
GONZÁLEZ, Luis Mariano. Origin and formation of the Spanish Imperial Eagle (Aquila adalberti). Journal of Ornithology. 2008-4, roč. 149, čís. 2, s. 151–159. Dostupné online [cit. 2019-08-14]. ISSN0021-8375. DOI10.1007/s10336-007-0252-z. (anglicky)
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MORANDINI, Virginia; DE BENITO, Elena; NEWTON, Ian. Natural expansion versus translocation in a previously human-persecuted bird of prey. Ecology and Evolution. 2017-6, roč. 7, čís. 11, s. 3682–3688. Dostupné online [cit. 2019-09-09]. DOI10.1002/ece3.2896. PMID28616165. (anglicky)
worldcat.org
GONZÁLEZ, Luis Mariano. Origin and formation of the Spanish Imperial Eagle (Aquila adalberti). Journal of Ornithology. 2008-4, roč. 149, čís. 2, s. 151–159. Dostupné online [cit. 2019-08-14]. ISSN0021-8375. DOI10.1007/s10336-007-0252-z. (anglicky)
FERNÁNDEZ, Maria; ORIA, Javier; SÁNCHEZ, Roberto. Space Use of Adult Spanish Imperial Eagles Aquila adalberti. Acta Ornithologica. 2009-6, roč. 44, čís. 1, s. 17–26. Dostupné online [cit. 2019-08-22]. ISSN0001-6454. DOI10.3161/000164509X464849. (anglicky)
ORTEGA, Enric; MAÑOSA, Santi; MARGALIDA, Antoni. A demographic description of the recovery of the Vulnerable Spanish imperial eagle Aquila adalberti. Oryx. 2009-1, roč. 43, čís. 01, s. 113. Dostupné online [cit. 2019-08-22]. ISSN0030-6053. DOI10.1017/S0030605307991048. (anglicky)