@article{MZM_2017_101_3_a4,
     author = {A. M. Dulliev},
     title = {Properties of {Connected} {Ortho-convex} {Sets} in the {Plane}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {373--394},
     publisher = {mathdoc},
     volume = {101},
     number = {3},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2017_101_3_a4/}
}