@article{MZM_2017_102_2_a2,
     author = {A. M. Dulliev},
     title = {Two {Structures} {Based} on {Convexities} on the {2-Sphere}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {186--196},
     publisher = {mathdoc},
     volume = {102},
     number = {2},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2017_102_2_a2/}
}