@article{MZM_1997_61_6_a8,
     author = {E. I. Timoshenko},
     title = {Primitive elements of the free groups of the varieties $\mathfrak A\mathfrak N_n$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {884--889},
     publisher = {mathdoc},
     volume = {61},
     number = {6},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1997_61_6_a8/}
}