Rossafi, M., Massit, H., & Kari, A. (2022). Generalized rational $ \alpha_{\ast}- $ contraction in $ C^{\ast}- $algebra-valued b-metric spaces. Jurnal Matematika, Statistika Dan Komputasi, 19(1), 33–50. https://doi.org/10.20956/j.v19i1.21301