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BÄCKMAN, OLOF; FERRARINI, TOMMY . (2010). Combating Child Poverty? A Multilevel Assessment of Family Policy Institutions and Child Poverty in 21 Old and New Welfare States. Journal of Social Policy, 39(2), 275–. doi:10.1017/S0047279409990456 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research