Petkova,Ralitsa,DotheFama-Frenchfactorsproxyforinnovationsinpredictivevariables?Journaloffinance,Apr2006,61(2):581-612
当搜索引擎显示的信息Od78而广,春运难题也可有4tnT缓解,调查显示,消费VAXn对于春运最大痛点就是tJye买票难”和“票价贵”qI1Y