%0 Journal Article %A A. O. Ivanov %A A. A. Tuzhilin %T Generalized Maxwell formula for the length of a minimal tree with a given topology %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 2010 %P 7-14 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_2010_3_a1/ %G ru %F VMUMM_2010_3_a1