This article is available now on a website of the Ukrainian journal of ornithology «Berkut». The authors studied Short-toed Eagle in Vitebsk Region /map/ in 1981–2010:
• Vladimir Ivanovsky, Dmitry Shamovich, 2011 – Ecology of Short-toed Eagle in Belarussian Poozerie // Berkut. 20 (1-2): P. 81-89. – 
(En).
Just the translatable text form for two articles (Ru) of Vladimir Ivanovski /map/ is meant now:
• В. Ивановский, 1992 – Экология гнездования змееяда в Белорусском Поозерье [Ecology of Short-toed Eagle nesting in the Byelorussian Poozerje] // Современная орнитология: 56-69.
• В. Ивановский, 2002 – Змееяд в Северной Беларуси: настоящее и будущее [Short-toed Eagle in Northern Belarus: present and future] // Беркут, 11 (2): 158-164.
Let us draw your attention to a website of the Scientific Electronic Library – eLibrary.ru. You can get actually every publication of the Russian Ornithological Journal after free registration on the site. Some of them are dedicated to Short-toed Eagle (Ru):
• Ивановский В.В., 1983 – Змееяд Circaetus gallicus в Белорусском Поозерье [Short-toed Eagle in Belarussian Poozer’e] // Тез. докл. 11-й Прибалт. орнитол. конф. Таллин: 95-98 – Рус. орнитол. журн. 2007. Том 16. Экспресс-выпуск № 389: 1594-1596. /map/.
• Гуль В.Н., 2000 – Новая находка змееяда Circaetus gallicus в Себежском Поозерье (Псковская область) [New find of Short-toed Eagle in Sebezh Poozer’e (Pskov Region)] // Рус. орнитол. журн. Экспресс-выпуск 110: 9-10. /map/.
• Березовиков Н.Н., Левин А.С., 2002 – О нахождении смешанной кладки змееяда Circaetus gallicus и степной пустельги Falco naumanni в Прибалхашье [Find of mixed clutch of Short-toed Eagle and Lesser Kestrel in Pribalkhashie] // Рус. орнитол. журн. Экспресс-выпуск 201: 967. /map/.
This small gallery is composed of Vladimir Ivanovski’s pictures. The photos were taken in Northern Belarus /map/. Also here you can see Short-toed Eagle chick in the artificial nest built by Dr. Ivanovski for them. He is an author of the special method of the building.
Here we present three different authors’ texts dedicated to Short-toed Eagles of three different regions: Crimea, Belarus and Turkmenistan. They are extracts…
…from S.A. Bukreev’s book (Ru):
• Букреев С.А., 1997 – Орнитогеография и заповедное дело Туркменистана [Ornithogeography and reserve management of Turkmenistan] – М.: Центр охраны дикой природы (Biodiversity Conservation Center), 159 с.
…from Y.V. Kostin’s book (Ru):
• Костин Ю.В., 1983 – Птицы Крыма [Birds of Crimea] – М.: Наука, 240 с. /map/.
…and from V.V. Ivanovski’s work (Ru):
• Ивановский В.В., 1992 – Трофические связи редких хищных птиц Белорусского Поозерья [Food chains of rare birds of prey of Belarussian Poozer’e] // Оттиск, №173, 66 с. /map/.
Some links to V. Ivanovski‘s works concerning Short-toed Eagle ecology in Northern Belarus /map/ (all contain summaries in English):
• В. Ивановский, 1992 – Экология гнездования змееяда в Белорусском Поозерье // Современная орнитология: 56-69. – (Ru) (translatable form) (source – website of the Working Group on Raptors and Owls of Northern Eurasia).
• В. Ивановский, 2002 – Змееяд в Северной Беларуси: настоящее и будущее // Беркут, 11 (2): 158-164. – (Ru) (translatable form).
(source – website of the Ukrainian journal of ornithology BERKUT). The summary of this work can be found on the World Working Group on Birds of Prey and Owls website: The Short-toed Eagle Circaetus gallicus in Belarus (En) – sixth article. At the same time, mark the first article on the list, that is an abstract of the oral report of another researcher: Dimitris E. Bakaloudis – Aspects of the Ecology of the Short-toed Eagle Circaetus gallicus in Dadia Soufli Forest, NE Greece (En) /map/.