@article{TMF_1993_96_1_a4,
     author = {M. B. Sevryuk},
     title = {Estimate of the number of collisions of $n$ elastic particles on a~line},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {64--78},
     publisher = {mathdoc},
     volume = {96},
     number = {1},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1993_96_1_a4/}
}