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♦ 1Diet of the Omani Owl, Strix butleri, near Nakhal, Oman. Zool. Middle East 62(1): 17–20.
♦ 2Contribution to the study of the diet of four owl species (Aves, Strigiformes) from mainland and island areas of Greece, Haralambos Alivizatos, Vassilis Goutner and Stamatis Zogaris, Belg. J. Zool., 135 (2) : 109-118
♦ 3CONTRIBUTION TO THE KNOWLEDGE OF THE DIET OF IRANIAN BIRDS, Abolghasem Khaleghizadeh, Mohammad E. Sehhatisabet, Екологія, Беркут 15, Вип. 1-2. 2006. pp. 145-150