@article{SMZ_2005__46_2_51930,
     author = {Bagderina, Yu.Yu.},
     title = {Symmetries of factor systems.},
     journal = {Sibirskij Matematicheskij Zhurnal},
     pages = {290},
     publisher = {mathdoc},
     volume = {46},
     number = {2},
     year = {2005},
     zbl = {1078.35005},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/SMZ_2005__46_2_51930/}
}