@article{MZM_1997_62_3_a16,
     author = {N. I. Sandu},
     title = {On the length of the central series (derived series) of a {Moufang} commutative loop},
     journal = {Matemati\v{c}eskie zametki},
     pages = {475--478},
     publisher = {mathdoc},
     volume = {62},
     number = {3},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1997_62_3_a16/}
}