@article{FPM_2013_18_1_a5,
     author = {A. V. Klimakov},
     title = {Almost primitive elements of free {Lie} algebras of small ranks},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {63--74},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2013_18_1_a5/}
}