%0 Journal Article
%A D. P. Ilyutko
%A I. M. Nikonov
%T Extremal networks in $\lambda$-geometry, where $\lambda=3,4,6$
%J Sbornik. Mathematics
%D 2017
%P 479-509
%V 208
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_2017_208_4_a1/
%G en
%F SM_2017_208_4_a1