@article{KJM_2025_49_5_a11,
     author = {Mohammad Sababheh and Shiva Sheybani and Hamid Reza Moradi},
     title = {Matrix {Fej\'er} and {Levin-Ste\v{c}kin} {Inequalities}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {807 },
     year = {2025},
     volume = {49},
     number = {5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2025_49_5_a11/}
}