D. Charvatova,  Relationship between Communication Effectiveness and the Extent of Communication among Organizational Units.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    May 2008, vol. 17(5). 576 - 578
    [viewed 19 February 2020]. Available from: https://publications.waset.org/pdf/9074.