@article{MZM_2012_91_1_a12,
     author = {A. V. Grishin},
     title = {On the {Center} of a {Relatively} {Free} {Lie-Nilpotent} {Algebra} of {Index~}$4$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {147--148},
     publisher = {mathdoc},
     volume = {91},
     number = {1},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2012_91_1_a12/}
}