@article{MZM_1991_50_1_a16,
     author = {O. Yu. Borenshtein and V. S. Shulman},
     title = {A~minimax theorem},
     journal = {Matemati\v{c}eskie zametki},
     pages = {139--141},
     publisher = {mathdoc},
     volume = {50},
     number = {1},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1991_50_1_a16/}
}