Calculation of tourism development income index based on finite element ordinary differential mathematical equation
Publié en ligne: 13 déc. 2021
Pages: 617 - 628
Reçu: 17 juin 2021
Accepté: 24 sept. 2021
© 2021 Ying Wei et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.