@article{FPM_2006_12_2_a7,
     author = {V. T. Markov and V. V. Tenzina},
     title = {On $\Sigma$-nilpotent ideals of topological {PI-rings}},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {111--118},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2006_12_2_a7/}
}