@Article{484957,
     author = "Renata Orłowska",
     title = "Immigration in the European Union in the second decade of the 21st century : problem or solution?",
     year =  2011,
     volume =  10(18),
     number =  1,
     journal =  Folia Oeconomica Stetinensia,
     pages =  s. 164-174,
    }