https://s.pinggu.org/search.php?mod=forum&searchid=1354092&orderby=lastpost&ascdesc=desc&searchsubmit=yes&kw=Event-study+methodology+under+conditions+of+event-induced+variance
https://bbs.pinggu.org/thread-306047-1-1.html
https://bbs.pinggu.org/thread-490009-1-1.html
https://bbs.pinggu.org/thread-386330-1-1.html
https://bbs.pinggu.org/thread-345664-1-1.html
论坛已有。可以先在站内搜一下。搜索方法：首先选择站内搜索。如果没有搜到，就选择“高级”，勾选带“全文”的方框，并把题目中“and”及其之后的内容去掉，就有更高几率找到。比如找“Competition network structure and product market entry”，就全文查找“Competition network structure”。（或参考https://bbs.pinggu.org/thread-5557381-1-1.html 的藤椅帖）

非常感谢！！！