CAPTCHA Design and Security Issues
Crossref DOI link: https://doi.org/10.1007/978-981-13-1483-4_4
Published Online: 2018-12-07
Published Print: 2019
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Chow, Yang-Wai
Susilo, Willy
Thorncharoensri, Pairat
Text and Data Mining valid from 2018-12-07