%0 Journal Article %A A. G. Bannikova %A D. P. Ilyutko %A I. M. Nikonov %T The length of an extremal network in a~normed space: Maxwell formula %J Contemporary Mathematics. Fundamental Directions %D 2013 %P 5-20 %V 51 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2013_51_a0/ %G ru %F CMFD_2013_51_a0