@article{马良_1790, author = {[马良, 袁健, 张劲松]}, title = {一种有效预防点击欺诈的策略}, publisher = {《计算机应用》唯一官方网站}, year = {2009}, journal = {计算机应用}, volume = {29}, number = {07}, eid = {1790}, pages = {1790-1792}, keywords = {

点击付费;点击欺诈;光学字符识别;粘连;验证码

}, url = http://www.joca.cn/CN/abstract/article_11966.shtml }