TY - JOUR AU - A. A. Zobova TI - Comments on Ciocci~M.\,C. et~al. ``Towards a Prototype of a Spherical Tippe'' JO - Russian journal of nonlinear dynamics PY - 2012 SP - 427 EP - 430 VL - 8 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ND_2012_8_2_a13/ LA - ru ID - ND_2012_8_2_a13 ER -