Княжество България: негова повърхнина, природа, население, духовна култура, управление и новѣйша история [Kniazhestvo Bulgariia: negova porurkhnina, priroda, nasedenie, dukhovna kultura ...]
Konstantin Josef Jireček (Bulgarian: Константин Йозеф Иречек, pronounced [jiretʃek]; 24 July 1854, Vienna – 1918, Vienna), son of Josef Jireček (1825–1888) and Božena, a daughter of Pavol Jozef Šafárik (1795–1861), was a Czech historian, politician, diplomat, and Slavist. He was the founder of the Bohemian Balkanology (or Balkan Studies) and Byzantine studies.
The bulk of his writings deal with the history of the southern Slavs and their literature. They include a History of the Bulgarians (Czech and German, 1876), History of Serbs, The Principality of Bulgaria (1891), Travels in Bulgaria (Czech, 1888), etc. He mostly wrote in German.