À propos de cet article
Publié en ligne: 24 août 2020
Pages: 519 - 530
Reçu: 19 janv. 2020
Accepté: 22 févr. 2020
DOI: https://doi.org/10.2478/amns.2020.2.00028
Mots clés
© 2020 Yuqi Li, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Li, Yuqi
School of Economics and Management, Beijing University of Posts and TelecommunicationsBeijing, China