@article{UFA_2020_12_1_a6,
     author = {B. P. Allahverdiev and H. Tuna},
     title = {Existence of solutions for nonlinear singular $q${-Sturm--Liouville} problems},
     journal = {Ufa mathematical journal},
     pages = {91--102},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2020_12_1_a6/}
}