Markandeya Kunchi,  Optimizing Usability Testing with Collaborative Method in an E-Commerce Ecosystem.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2018, vol. 141(9). 1230 - 1235
    [viewed 17 November 2019]. Available from: https://publications.waset.org/pdf/10009548.