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Continue to ChatTesting the EKC hypothesis for ten US states: an application of heterogeneous panel estimation method - https://avesis.atauni.edu.tr/yayin/ac42109e-0fff-4a90-bef2-0cbc55b3fbab/testing-the-ekc-hypothesis-for-ten-us-states-an-application-of-heterogeneous-panel-estimation-method