@article{VMUMM_2005_4_a11,
     author = {D. P. Il'yutko},
     title = {Geometry of extremal networks on $\lambda$-normed planes},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {52--54},
     publisher = {mathdoc},
     number = {4},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2005_4_a11/}
}