@article{CHEB_2023_24_2_a4,
     author = {A. Kh. Galstyan},
     title = {Boundary stability in the {Fermat--Steiner} problem in hyperspaces over finite-dimensional normed spaces},
     journal = {\v{C}eby\v{s}evskij sbornik},
     pages = {81--128},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHEB_2023_24_2_a4/}
}