Institutional research on information disclosure of internal control for China's listed companies 并列题名：Institutional research on information disclosure of internal control for China's listed companies Report on voluntary information disclosure index of China's listed companies Empirical research on intended discretion of financial reports in China listed companies 并列题名：Empirical research on intended discretion of financial reports in China listed companies 并列题名：Report on voluntary information disclosure index of China's listed companies Research on risk information disclosure of Chinese listed companies Research on the information disclosure quality of listed companies Empirical study on auditor's report on internal control of listed companies 并列题名：Research on the information disclosure quality of listed companies