TY - JOUR AU - I. M. Nikonov TI - An example of a nontrivial characteristic class for the group algebra $\mathbb{C}[\mathbb{Z}_3]$ JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 2002 SP - 58 EP - 60 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMUMM_2002_4_a10/ LA - ru ID - VMUMM_2002_4_a10 ER -