@inproceedings{wu:hal-01518212,
  TITLE = {{Enhancing the Security of On-line Transactions with CAPTCHA Keyboard}},
  AUTHOR = {Wu, Yongdong and Zhao, Zhigang},
  URL = {https://inria.hal.science/hal-01518212},
  NOTE = {Part 13: Short Papers},
  BOOKTITLE = {{27th Information Security and Privacy Conference (SEC)}},
  ADDRESS = {Heraklion, Crete, Greece},
  EDITOR = {Dimitris Gritzalis and Steven Furnell and Marianthi Theoharidou},
  PUBLISHER = {{Springer}},
  SERIES = {Information Security and Privacy Research},
  VOLUME = {AICT-376},
  PAGES = {531-536},
  YEAR = {2012},
  MONTH = Jun,
  DOI = {10.1007/978-3-642-30436-1\_44},
  PDF = {https://inria.hal.science/hal-01518212/file/978-3-642-30436-1_44_Chapter.pdf},
  HAL_ID = {hal-01518212},
  HAL_VERSION = {v1},
}