1. Auflösung einer mechanischen Aufgabe;Abel;J. Reine Angew. Math.,1826
2. Oplösning af et par opgaver ved hjelp af bestemte integraler;Abel;Mag. Naturvidenskaberne,1823
3. Problems of Sturm–Liouville type for differential equations with fractional derivatives;Aleroev,2019
4. Theoretical and computational perspectives on the eigenvalues of fourth order fractional Sturm-Liouville problem;Al-Mdallal;Int. J. Comput. Math.,2018
5. Fundamental results of conformable Sturm-Liouville eigenvalue problems;Al-Refai;Complexity,2017