@article{IIGUM_2025_51_a3, author = {J. M. Jonnalagadda and J. E. N\'apoles Vald\'es}, title = {Positive solutions of nabla fractional {Sturm--Liouville} problems}, journal = {The Bulletin of Irkutsk State University. Series Mathematics}, pages = {50--65}, publisher = {mathdoc}, volume = {51}, year = {2025}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IIGUM_2025_51_a3/} }