Zou, Xing-Yun, Xin-Yu Peng, Xin-Xin Zhao, Jie Ma, and Chun-Ping Chang. “Does Income Inequality Affect Green Innovation? A Non-Linear Evidence”. Technological and Economic Development of Economy 30, no. 3 (May 22, 2024): 578–602. Accessed November 9, 2024. https://jcem.vgtu.lt/index.php/TEDE/article/view/19271.