@Article{310655,
     author = "Alina Szypulewska-Porczyńska",
     title = "Patterns of trade in a time of crisis - integration of Polish services market within the European Union ",
     year =  2011,
     volume =  30,
     number =  ,
     journal =  International Journal of Management and Economics,
     pages =  s. 60-70,
    }