| Affiliation: | 1. Department of Economics and CIREQ, University of Montreal, P.O. Box 6128, Station Downtown, Montreal QC H3C 3J7, Canada;2. Department of Quantitative Economics, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands;1. University of La Rochelle, France;2. University of York, United Kingdom;1. School of Management Engineering, Xi’an University of Finance and Economics, Xi’an Shaanxi, 710100, PR China;2. Department of Mathematics, Eastern Michigan University, Ypsilanti, MI 48197, USA;3. Department of Applied Mathematics, Northwestern Polytechnical University, Xi’an Shaanxi, 710129, PR China;4. Mathematics and Information College, Hebei Normal University, Shijiazhuang 050016, PR China |
