@Article{478470,
     author = "Magdalena Biniaś-Szkopek",
     title = "Mid-twelfth-century Poland between East and West – conflicts, alliances, marriages",
     year =  2015,
     volume =  2(9),
     number =  ,
     journal =  Historia Slavorum Occidentis,
     pages =  s. 15-35,
    }