1 |
School of Economics and Management, Chang’an University, Xi’an, China |
2 |
School of Civil Engineering, Chang’an University, Xi’an, China |
CORRESPONDING AUTHOR
Libiao Bai
Chang’an University, Middle Section of South Second Ring Road, 710064 xi'an, China
Submission date: 2018-06-03
Final revision date: 2018-09-04
Acceptance date: 2018-09-08
Online publication date: 2019-05-03
Publication date: 2019-07-08
Pol. J. Environ. Stud. 2019;28(5):3697–3709