WASET
    Paraskevi Theodorou and  Apostolos Meliones,  User Requirements Analysis for the Development of Assistive Navigation Mobile Apps for Blind and Visually Impaired People.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2020, vol. 157(1). 6 - 9
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10010981.