@article{SEMR_2008_5_a11,
     author = {A. J. Duncan and I. V. Kazachkov and V. N. Remeslennikov},
     title = {Orthogonal systems in finite graphs},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {151--176},
     publisher = {mathdoc},
     volume = {5},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2008_5_a11/}
}