@article{TMF_2020_204_1_a7,
     author = {P. M. Akhmet'ev},
     title = {Magnetic helicity flux for mean magnetic field equations},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {130--141},
     year = {2020},
     volume = {204},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2020_204_1_a7/}
}