@Article{397123,
     author = "Urszula Wich",
     title = "Delimitation Problems of Urban Agglomerations in Poland and in Other Countries",
     year =  1984,
     volume =  18,
     number =  ,
     journal =  Annales Universitatis Mariae Curie-Skłodowska. Sectio H, Oeconomia,
     pages =  s. 71-83,
    }