Ren, Jiaojiao http://orcid.org/0000-0002-7926-2147
Wu, Cong
Funding for this research was provided by:
Opening Fund of Geomathematics Key Laboratory of Sichuan Province (scsxdz2019yb03)
Article History
Received: 30 March 2020
Accepted: 3 November 2020
First Online: 23 November 2020
Competing interests
: The authors declare that they have no competing interests.