Feng, Yating. “The Application of Calculus in the Intangible Asset Valuation in the Financial Evaluation of Enterprise Mergers and Acquisitions”. Probe - Accounting, Auditing and Taxation 6, no. 4 (December 31, 2024). Accessed April 12, 2025. https://ojs.as-pub.com/index.php/PAAT/article/view/8399.