@article{SM_1993_74_2_a1,
     author = {L. A. Balashov and Yu. A. Dreizin and M. S. Mel'nikov},
     title = {Approximations of the exponential function and relative closeness of stable signals},
     journal = {Sbornik. Mathematics},
     pages = {291--307},
     publisher = {mathdoc},
     volume = {74},
     number = {2},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1993_74_2_a1/}
}