In September 2006 was released the collection “The Second World War in Bulgaria: 1939-1947” which contains papers and scientific reports from the National scientific conference “The Second World War in Bulgaria: 1939-1947” organized on the 7th and 8th April 2005 in Sliven.
In 2006 was released the book “Treasure and folklore history” which author is doctor Vladimir Demirev - the folklore-scientist from the Historical Museum – Sliven.
“Ilindensko-preobrajensko rebellion 1903 -2003”
A collection of materials from the science readings organized in Sliven on 11 June 2003 and dedicated to the 100-th anniversary of the Ilindensko-preobrajensko rebellion.