DENG, Leyi; FENG, Xiaowei; MAO, Yunya; WAN, Zijia. Deconstructing the Friday the 13th Effect: Evidence from Dummy-Variable Regression, Wavelet Analysis, and XGBoost Prediction. Scientific Journal of Intelligent Systems Research, [S. l.], v. 8, n. 5, p. 42–56, 2026. DOI: 10.54691/rp81mr64. Disponível em: https://bcpublication.org/index.php/SJISR/article/view/9449. Acesso em: 8 jul. 2026.