This paper was published in 2008. It’s dedicated to relationships between migrating Short-toed Eagles and local Yellow-legged Gulls in the region of Gibraltar /map/.
• Mosquera M., 2008 – Mobbing of migrant Short-toed Eagles Circaetus gallicus by Yellow-legged Gulls Larus michahellis during their northbound passage over Gibraltar // Gibraltar Bird Report, 7: 51-54. – 
(En).
Two articles are available in the Bibliography section of Guido Premuda‘s website Sunbird.it:
• PREMUDA G., 2010 – Trends at a roost of Short-toed Eagles Circaetus gallicus over ten years // Avocetta 34: 63-64. – (En).
• PREMUDA G., BAGHINO L., GUSTIN M. & BORIONI M., 2010 – Data on spring migration of immature Short-toed Eagles Circaetus gallicus through the Central Mediterranean route (Italy, Tunisia) // Avocetta 34: 65-68. – (En).
The following paper was already mentioned on HoverOverUs. Now the PDF of it is available on the Seaturtle.org website:
• Pavón D., Limiñana R., Urios V., Izquierdo A., Yáñez B., Ferrer M. & de la Vega A., 2010 – Autumn migration of juvenile Short-toed Eagles Circaetus gallicus from southeastern Spain // Ardea, 98 (1). P. 113–117. – (En) /map/.
A new paper on the circuitous migration of Short-toed Eagles from southern Italy /map/ to Africa has been published:
• Mellone U., Limiñana R., Mallìa E. & Urios V., 2011 – Extremely detoured migration in an inexperienced bird: interplay of transport costs and social interactions // Journal of Avian Biology 42: 468-472. – (En).
The PDF can be found on Ugo Mellone’s website.
A new work of Dimitris E. Bakaloudis and Christos G. Vlachos on feeding of Short-toed Eagle in the Dadia-Lefkimi-Soufli National Park /map/ is published on the Journal of Biological Research website:
• Dimitrios E. Bakaloudis, Christos G. Vlachos, 2011 – Feeding habits and provisioning rate of breeding short-toed eagles Circaetus gallicus in northeastern Greece // Journal of Biological Research-Thessaloniki 16: 166 – 176. – (En).
A new short report about summering immature Short-toed Eagles in Africa has been published. We express our gratitude to Ugo Mellone for placing the PDF version of it on his website:
• Ugo Mellone, Beatriz Yáñez, Rubén Limiñana, A.-Román Muñoz, Diego Pavón, J.-Miguel González, Vicente Urios & Miguel Ferrer, 2011 – Summer staging areas of non-breeding Short-toed Snake Eagles Circaetus gallicus // Bird Study, iFirst: 1-6. – (En).
These old short texts have been found recently on the Net:
• Bas van Balen, A. R. Compost, 1989 – Overlooked evidence of the Short-toed Eagle Circaetus gallicus on Java // Kukila. Vol. 4 – No 1-2 – P. 44-46. – (En) /map/;
• Wolfgang Rowold & Harald Weidener, 1999 – Beobachtung eines Schlangenadlers (Circaetus gallicus (Gmel.,1788)) in Marienmünster, Krs. Höxter [Observation of the Short-toed Eagle in Marienmünster] // Egge-Weser. Bd. 12. – S. 61. – (De) /map/.
And a work on flight properties of Palearctic Eagles, where Short-toed Eagle is one of the research objects:
• Kirmse W., 1998 – Morphometric features characterizing Flight Properties of Palearctic Eagles // Holarctic Birds of Prey. – P. 339-348. – (En).