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HARVARD Citation
Li, H. et al. (2020). A causal analysis of time-varying speed camera safety effects based on the propensity score method. Journal of safety research. pp. 119-127. [Online].
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Li, H. et al. (2020). A causal analysis of time-varying speed camera safety effects based on the propensity score method. Journal of safety research. pp. 119-127. [Online].