@article{VMUMM_2002_4_a10,
     author = {I. M. Nikonov},
     title = {An example of a nontrivial characteristic class for the group algebra $\mathbb{C}[\mathbb{Z}_3]$},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {58--60},
     publisher = {mathdoc},
     number = {4},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2002_4_a10/}
}