@article{VMUMM_2012_2_a4,
     author = {M. I. Kharitonov},
     title = {Two-sided estimates for essential height in {Shirshov's} {Height} {Theorem}},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {20--24},
     publisher = {mathdoc},
     number = {2},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2012_2_a4/}
}