Institution: | 1. School of Mathematical Sciences, Jiangsu Key Laboratory for NSLSCS, Nanjing Normal University, Nanjing, 210023, China 2. Department of Social Science Teaching, Nanjing Institute of Railway Technology, Nanjing, 210031, China 3. PPGEPS, Pontifical Catholic University of Parana (PUCPR), Curitiba, Parana, Brazil
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