@article{TMF_1992_90_2_a5,
     author = {\`E. S. Medvedev},
     title = {The {Landau--Lifshitz} formula and the correspondence principle for semiclassical matrix elements},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {218--225},
     publisher = {mathdoc},
     volume = {90},
     number = {2},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1992_90_2_a5/}
}