@article{TMF_1978_37_2_a9,
     author = {A. N. Ermilov and A. M. Kurbatov},
     title = {Approximation of the {Hamiltonian} for $(V,\mathscr N)$-systems},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {258--264},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1978_37_2_a9/}
}