@article{MZM_2020_108_6_a1,
     author = {V. P. Zastavnyi},
     title = {Inequalities for {Positive} {Definite} {Functions}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {823--836},
     publisher = {mathdoc},
     volume = {108},
     number = {6},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2020_108_6_a1/}
}