Akiko Kondo and  Akio Kondo,  Present State of Local Public Transportation Service in Local Municipalities of Japan and Its Effects on Population.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    February 2016, vol. 111(3). 857 - 861
    [viewed 26 May 2020]. Available from: https://publications.waset.org/pdf/10004019.