1.
Fractional Helmholtz and Fractional Wave Equations with Riesz-Feller and Generalized Riemann-Liouville Fractional Derivatives. Eur. J. Pure Appl. Math. 2014;7(3):312-334. Accessed February 23, 2026. https://www.ejpam.com/ejpam/article/view/2176