Anmari H. Viljamaa and  Elina M. Varamäki,  Do Persistent and Transitory Hybrid Entrepreneurs Differ?.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2015, vol. 99(3). 936 - 940
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10000901.