@article{AA_2003_15_5_a5,
     author = {S. V. Smirnov},
     title = {Cyclic $q$-chains},
     journal = {Algebra i analiz},
     pages = {228--253},
     publisher = {mathdoc},
     volume = {15},
     number = {5},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2003_15_5_a5/}
}