@article{TMF_1985_62_2_a11,
     author = {S. N. Gorshkov and A. V. Zabrodin and C. Rodriguez and V. K. Fedyanin},
     title = {Feynman's variational principle for a~polaron in a~magnetic field},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {304--311},
     publisher = {mathdoc},
     volume = {62},
     number = {2},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1985_62_2_a11/}
}