Babakhani, Azizollah; Al-Mdallal, Qasem M. On the existence of positive solutions for a non-autonomous fractional differential equation with integral boundary conditions. (English) Zbl 1488.34020 Comput. Methods Differ. Equ. 9, No. 1, 36-51 (2021). MSC: 34A08 26A33 34B18 34B10 37C60 47N20 PDFBibTeX XMLCite \textit{A. Babakhani} and \textit{Q. M. Al-Mdallal}, Comput. Methods Differ. Equ. 9, No. 1, 36--51 (2021; Zbl 1488.34020) Full Text: DOI
Ahmad, Shabir; Ullah, Aman; Al-Mdallal, Qasem M.; Khan, Hasib; Shah, Kamal; Khan, Aziz Fractional order mathematical modeling of COVID-19 transmission. (English) Zbl 1490.92061 Chaos Solitons Fractals 139, Article ID 110256, 10 p. (2020). MSC: 92D30 26A33 34A08 37N25 PDFBibTeX XMLCite \textit{S. Ahmad} et al., Chaos Solitons Fractals 139, Article ID 110256, 10 p. (2020; Zbl 1490.92061) Full Text: DOI