@article{VTGU_2015_3_a8,
     author = {I. P. Popov},
     title = {The group velocity of a wave packet formed by two free identical particles with different non-relativistic velocities},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {69--72},
     publisher = {mathdoc},
     number = {3},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2015_3_a8/}
}