WU, Ziyang. Research on the Principle of Double Inflection Points and its Profitability. Technium: Romanian Journal of Applied Sciences and Technology, Constanta, Romania, v. 3, n. 2, p. 13–28, 2021. Disponível em: https://www.techniumscience.com.techniumscience.pluscommunication.eu/index.php/technium/article/view/2946. Acesso em: 17 apr. 2026.