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  "Description": "Extremely fast and memory efficient computation of the DER\n(or PaF) income polarization index as proposed by Duclos J. Y.,\nEsteban, J. and Ray D. (2004). \"Polarization: concepts,\nmeasurement, estimation\". Econometrica, 72(6): 1737--1772.\n<doi:10.1111/j.1468-0262.2004.00552.x>. The index may be\ncomputed for a single or for a range of values of the\nalpha-parameter and bootstrapping is also available.",
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