Okigbo, C. J., I. A. Onyeozili, H. A. Mohammed, and M. O. Francis. 2026. “Aggregated Fuzzy Soft Rule Interaction and Root Mean Square (RMS) Based Acoustic Instability Modelling for Vocal Vulnerability Assessment”. GPH-International Journal of Mathematics 9 (5), 49-67. https://doi.org/10.5281/zenodo.21000056.