@article{TMF_2017_190_1_a11,
     author = {A. P. Lelyakov and A. S. Karpenko},
     title = {Dynamics of a~probe null string in the~gravitational field of a~closed null string radially collapsing in the~plane},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {162--178},
     publisher = {mathdoc},
     volume = {190},
     number = {1},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2017_190_1_a11/}
}