Modeling the Impact of Emission Credit Systems on Automotive Product Portfolios: A Mathematical Analysis of Policy Effects in Europe, China, and the U.S. Under Different Demand Scenarios. JUMS [Internet]. 2025 Sep. 3 [cited 2025 Sep. 6];10(3). Available from: https://jums.ub.uni-muenchen.de/JMS/article/view/5318