@Article{452261,
     author = "Jerzy Menkes",
     title = "Act on polish citizenship of 2 april 2009 (journal of laws 2009) – from the perspective of international law",
     year =  2014,
     volume =  6,
     number =  ,
     journal =  Silesian Journal of Legal Studies,
     pages =  s. 56-71,
    }