@Article{380432,
     author = "Justyn Henryk Widuch",
     title = ""Die responsa ad consulta bulgarorum des papstes Nikolaus I (858-867)", Lothar Heiser, Trier 1979 : [recenzja]",
     year =  1980,
     volume =  13,
     number =  ,
     journal =  Śląskie Studia Historyczno-Teologiczne,
     pages =  s. 379-382,
    }