@article{DM_2008_20_3_a5,
     author = {V. M. Khrapchenko},
     title = {The fundamental difference between depth and delay},
     journal = {Diskretnaya Matematika},
     pages = {51--72},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2008_20_3_a5/}
}