de Souza, Adler Diniz, UNIFEI, Federal University of Itajuba, Institute of Mathematics and Computing, BPS Ave., 1303, Pinheirinho, ZIP:37.500-903, Itajuba, Minas Gerais State, Brazil
Deng, Yanru, School of Economics, Dongbei University of Finance and Economics, Dalian, 116025, China
Do, Hai Hung, School of Business Management, Hanoi University of Industry, Vietnam
Du, Zeyuan, Qingdao University, Qingdao, Shandong, 266071, China

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