@article{TMF_2007_152_3_a1,
     author = {S. V. Talalov},
     title = {$N$-soliton strings in four-dimensional space{\textendash}time},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {430--439},
     year = {2007},
     volume = {152},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2007_152_3_a1/}
}