@article{MZM_1990_48_4_a4,
     author = {V. I. Ivanov and S. A. Pichugov},
     title = {Jung constants of the $l_p^n$-spaces},
     journal = {Matemati\v{c}eskie zametki},
     pages = {37--47},
     publisher = {mathdoc},
     volume = {48},
     number = {4},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_4_a4/}
}