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APA Citation
Al-Mdallal, Q., Al-Refai, M., Syam, M., & Al-Srihin, M. K. (2018). theoretical and computational perspectives on the eigenvalues of fourth-order fractional Sturm–Liouville problem. International journal of computer mathematics, 95(8), 1548–1564. http://access.bl.uk/ark:/81055/vdc_100064354069.0x00005e