@article{Chmielewski2019, author = "Anna K. Chmielewski", title = "{Chmielewski_online_supplement – Supplemental material for The Global Increase in the Socioeconomic Achievement Gap, 1964 to 2015}", year = "2019", month = "5", url = "https://sage.figshare.com/articles/journal_contribution/Chmielewski_online_supplement_Supplemental_material_for_The_Global_Increase_in_the_Socioeconomic_Achievement_Gap_1964_to_2015/8186933", doi = "10.25384/SAGE.8186933.v1" }