@article{TMF_1993_96_1_a3,
     author = {O. M. Ivanov and A. G. Savinkov},
     title = {Nontrivial $U(1)$ bundles over tori and properties of many-particle systems with topological charge},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {44--63},
     publisher = {mathdoc},
     volume = {96},
     number = {1},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1993_96_1_a3/}
}