@article{MZM_2004_75_2_a13,
     author = {A. I. Zeifman},
     title = {On {Sharp} {Estimates} of the {Rate} of {Convergence} for {Some} {Systems} of {Differential} {Equations}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {303--306},
     publisher = {mathdoc},
     volume = {75},
     number = {2},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2004_75_2_a13/}
}