上课要用，但是下载都要money，有没有好心人有这几个文件，跪求加跪谢
1. Brown, S., and J. Warner, Measuring security price
performance.Journal of Financial Economics 8,1980:205~
258.
2.Brown,S.,and J.Warner,Using daily stock returns:The
case of event studies.Journal of Financial Economics 14,
1985:(3~31).
3.Khotari,S.and J.Warner,Econometrics of event studies,
working paper,2006.