@article{TDM_2001_4_a17,
     author = {M. I. Tikhomirova and V. P. Chistyakov},
     title = {Normal approximation of multidimensional $\chi^2$ distribution},
     journal = {Trudy po diskretnoj matematike},
     pages = {259--272},
     publisher = {mathdoc},
     volume = {4},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TDM_2001_4_a17/}
}