https://www.wsi.de/fpdf/HBS-008896/p_wsi_report_97e_2024.pdf
http://uk.reuters.com/article/uk-ecb-policy-draghi-idUKKBN19H1Z7?utm_source=POLITICO.EU&utm_campaign=b1a85f2c23-EMAIL_CAMPAIGN_2017_06_27&utm_medium=email&utm_term=0_10959edeb5-b1a85f2c23-189647205
http://berlinpolicyjournal.com/the-bottom-forty-percent-have-not-benefited/
http://economics.mit.edu/files/12979