@book{ BA20789986,
  author    = "Dimitrov, Georgi and Bŭlgarska komunisticheska partii︠a︡ and Bŭlgarska komunisticheska partii︠a︡. Kongres",
  title     = "Political report : deli[v]ered to the V Congress of the Bulgarian Communist Party",
  publisher = "Press Department, Ministry of Foreign Affairs",
  year      = "1949",
  URL       = "http://ci.nii.ac.jp/ncid/BA20789986"
}