@article{MZM_2001_69_4_a13,
     author = {S. M. Malamud},
     title = {Operator {Inequalities} {Reverse} to the {Jensen} {Inequality}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {633--637},
     publisher = {mathdoc},
     volume = {69},
     number = {4},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_69_4_a13/}
}