作者: Xin Yang , Shigang Wen , Zhifeng Liu , Cai Li , Chuangxia Huang
DOI: 10.3390/MATH7090832
关键词:
摘要: … , and USD is at their center; and (3) most of the currencies are connected together based on geography, such as the currencies of CNY, VND, TWD, MYR and SGD being in the Asian …