@article{VMP_2003_4_1_a8,
     author = {N. Yu. Saburova},
     title = {An asymptotic method of consequent canonical substitutions of variables in},
     journal = {Numerical methods and programming},
     pages = {94--103},
     year = {2003},
     volume = {4},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2003_4_1_a8/}
}