@Article{134727,
     author = "Stefania Środa-Murawska",
     title = "Selected aspects of changes in trade network in the period 1995-2003 from the perspective of Polish small towns ",
     year =  2007,
     volume =  ,
     number =  8,
     journal =  Bulletin of Geography. Socio-Economic Series,
     pages =  s. 151-161,
    }