@article{MZM_2021_109_5_a9,
     author = {I. G. Tsar'kov},
     title = {Properties of {Monotone} {Connected} {Sets}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {781--792},
     publisher = {mathdoc},
     volume = {109},
     number = {5},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2021_109_5_a9/}
}