@Article{441183,
     author = "Tomasz Sławiński, Maciej Sulmicki",
     title = "The 3S model of urban sprawl in the Warsaw functional area",
     year =  2015,
     volume =  17,
     number =  ,
     journal =  MAZOWSZE Studia Regionalne,
     pages =  s. 53-65,
    }