TY - JOUR AU - P. V. Markov TI - Group classification of discrete dynamical systems JO - Russian journal of nonlinear dynamics PY - 2013 SP - 641 EP - 650 VL - 9 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ND_2013_9_4_a2/ LA - ru ID - ND_2013_9_4_a2 ER -