@Article{579254,
     author = "Janusz Marek Lichtarski, Katarzyna Piórkowska, Krzysztof Ćwik",
     title = "Intensity of Network Relationship : Towards Conceptualization and Operationalization ",
     year =  2016,
     volume =  14,
     number =  4 (2),
     journal =  Problemy Zarządzania,
     pages =  s. 50-61,
    }