Abrar Ullah, Hannan Xiao, Trevor Barker. A study into the usability and security implications of text and image based challenge questions in the context of online examination. EAIT, 24(1):13-39, 2019. [doi]
@article{UllahXB19,
title = {A study into the usability and security implications of text and image based challenge questions in the context of online examination},
author = {Abrar Ullah and Hannan Xiao and Trevor Barker},
year = {2019},
doi = {10.1007/s10639-018-9758-7},
url = {https://doi.org/10.1007/s10639-018-9758-7},
researchr = {https://researchr.org/publication/UllahXB19},
cites = {0},
citedby = {0},
journal = {EAIT},
volume = {24},
number = {1},
pages = {13-39},
}