AL KHLANJI, Z., Fihri, M., Mellouk, A., & Akharif, A. (2026). Joint Detection of Random Coefficient Variability and ARCH Effects via Optimal Parametric and Pseudo-Gaussian Tests. Statistics, Optimization & Information Computing, 16(6), 6515–6539. https://doi.org/10.19139/soic-2310-5070-4195