Olga A. Shvetsova,  Core Competence Development while Carrying out Organizational Changes.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2019, vol. 146(2). 85 - 92
    [viewed 19 January 2021]. Available from: https://publications.waset.org/pdf/10009982.