L. Korpinen and  R. Pääkkönen and  F. Gobba,  Accidents and Close Call Situations Connected to the Use of Mobile Phones in Working-Age People ≥ 50 Years Old.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2015, vol. 101(5). 1439 - 1442
    [viewed 28 September 2020]. Available from: https://publications.waset.org/pdf/10001217.