@article{KJM_2021_45_4_a9,
     author = {Mohammad Reza Heidari Tavani and Abdollah Nazari},
     title = {Existence of {Positive} {Solutions} for a {Pertubed} {Fourth-Order} {Equation}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {623 },
     year = {2021},
     volume = {45},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2021_45_4_a9/}
}