Materials on the breeding biology of Short-toed Eagle for Alexander Abuladze‘s thesis (Ru) were collected since 1973 on a territory of Georgia and of Western Azerbaijan:
• А. В. Абуладзе, 2006 – Змееяд (Circaetus gallicus) [Raptors of Georgia. Short-toed Eagle (Circaetus gallicus)] – Хищные птицы Грузии : Дисс … канд. биол. наук. – Тбилиси. – С. 87-91 (208 с.).
You can find the full text of the thesis on a website of the National Parliamentary Library of Georgia.