Editors. "Akkerman Convention between Russia and Ottoman Empire". The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=17880, accessed 23 May 2013.]
The Russian and Ottoman Empire sign the Akkerman Convention, as a result of the Tsar's ultimatum to the Sultan in April. This agreement settles the problem of the Danubian Provinces and Serbia, to the advantage of Russia.