@article{FPM_1997_3_4_a3,
     author = {M. I. Karlov and I. G. Tsar'kov},
     title = {Convexity and connectedness of {Chebyshev} sets and suns},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {967--978},
     publisher = {mathdoc},
     volume = {3},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1997_3_4_a3/}
}