@Article{104413,
     author = "Stanisława Górecka",
     title = "Demographic changes in the Central and East Europe on the turn of the 20th and 21st century ",
     year =  2006,
     volume =  ,
     number =  6,
     journal =  Bulletin of Geography. Socio-Economic Series,
     pages =  s. 67-76,
    }