@Article{532319,
     author = "Paulina Ledwoń",
     title = "The Historical Background as Factor Favoring the Occurrence of Mercenaries and the Contemporary Role of Mercenarism in the Context of International Law",
     year =  2013,
     volume =  ,
     number =  9,
     journal =  Security Dimensions and Socio-Legal Studies,
     pages =  s. 100-111,
    }