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https://www.semanticscholar.org/paper/Forecasting-Firm-Material-Events-from-8-K-Reports-Zhai-Zhang/26f8c13adc064a3833437d22ebfe3f89412b9760
您即将离开知乎,请注意您的帐号和财产安全。
https://www.semanticscholar.org/paper/Forecasting-Firm-Material-Events-from-8-K-Reports-Zhai-Zhang/26f8c13adc064a3833437d22ebfe3f89412b9760