Zhang, Xichun. “Cross-Sectional Return Prediction in China’s A-Share Market Based on Lasso and XGBoost: A Comparison With the Fama–MacBeth Multi-Factor Model”. Financial Economics Research, vol. 3, no. 4, Sept. 2026, pp. 84-96, https://doi.org/10.70267/fer.v3n4.8496.