After the Internal Macedonian Revolutionary Organisation is founded
in Ottoman-controlled Thessaloniki in 1893, aimed at the
independence of Macedonia, raids are made from Bulgaria into
Macedonian territory.
Citation:
Editors. "Raids from Bulgaria into Macedonia".
The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=19157, accessed 19 June 2013.]