BibTeX Reference for “Inaccessibility of CAPTCHA”

@TechReport{Cooper:21:IC,
  author      = "Michael Cooper and Janina Sajka and Jason White and Scott Hollier",
  title       = "Inaccessibility of {CAPTCHA}",
  month       = dec,
  note        = "https://www.w3.org/TR/2021/DNOTE-turingtest-20211216/",
  year        = "2021",
  bibsource   = "https://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Note",
  institution = "W3C",
}