KHAYYAT, Hassan. On Treating of Surface Cracks in Finite Layers of Fractional Materials. American Scientific Research Journal for Engineering, Technology, and Sciences, Jordan, v. 34, n. 1, p. 213–230, 2017. Disponível em: https://asrjetsjournal.org/American_Scientific_Journal/article/view/3270. Acesso em: 26 oct. 2025.