@article{TMF_1996_106_2_a10,
     author = {S. V. Frolov},
     title = {The perturbation of the surface density of electronic states by point defect~-- the connection with the topology of the isoenergetic curve},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {306--314},
     publisher = {mathdoc},
     volume = {106},
     number = {2},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1996_106_2_a10/}
}