@article{TMF_2008_155_2_a1,
     author = {A. K. Abramyan and S. A. Vakulenko},
     title = {Nonlinear {Ritz} method and the~motion of defects},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {202--214},
     publisher = {mathdoc},
     volume = {155},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2008_155_2_a1/}
}