@article{TRSPY_1987_180_a64,
     author = {Z. V. Zaritskaya and A. I. Shvaǐ and P. \={E}. Antonyuk},
     title = {Approximation of certain elementary functions in the metric of~$L$},
     journal = {Informatics and Automation},
     pages = {117--118},
     publisher = {mathdoc},
     volume = {180},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a64/}
}