@article{TMF_1991_89_1_a7,
     author = {I. V. Krive and A. S. Rozhavskii},
     title = {The $\theta$~vacuum and dissipation},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {80--93},
     publisher = {mathdoc},
     volume = {89},
     number = {1},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1991_89_1_a7/}
}