@article{AA_2012_24_5_a6,
     author = {A. V. Smirnov},
     title = {Quasi-isometric embedding of the fundamental group of an orthogonal graph-manifold into a~product of metric trees},
     journal = {Algebra i analiz},
     pages = {165--180},
     publisher = {mathdoc},
     volume = {24},
     number = {5},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2012_24_5_a6/}
}