TY - JOUR AU - A. V. Grishin AU - S. V. Pchelintsev TI - Proper central and core polynomials of relatively free associative algebras with identity of Lie nilpotency of degrees 5 and~6 JO - Sbornik. Mathematics PY - 2016 SP - 1674 EP - 1692 VL - 207 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2016_207_12_a2/ LA - en ID - SM_2016_207_12_a2 ER -