@article{FAA_2019_53_1_a9,
     author = {Lixin Cheng and Longfa Sun},
     title = {On the symmetrizations of $\varepsilon$-isometries on {Banach} spaces},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {93--97},
     publisher = {mathdoc},
     volume = {53},
     number = {1},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2019_53_1_a9/}
}