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Social Indicators Research > 2018 > 140 > 3 > 975-998
Mathematics and Computers in Simulation > 2004 > 65 > 1-2 > 77-85
Social Indicators Research > 2018 > 140 > 3 > 975-998
Mathematics and Computers in Simulation > 2004 > 65 > 1-2 > 77-85