?:authorAffiliation
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[\'Business School, Faculty of Economics and Business, Universitat de Barcelona, Spain; Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Makassar, Indonesia. Electronic address: aahmarah9@alumnes.ub.edu.\', \'Department of Economic, Financial and Actuarial Mathematics, Faculty of Economics and Business, Universitat de Barcelona, Spain. Electronic address: evaboj@ub.edu.\']
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