Kinge J.M., Øverland S., Flatø, M., et al. 2021. Parental income and mental disorders in children and adolescents: prospective register-based study. International Journal of Epidemiology 50, 1615–1627. doi: 10.1093/ije/dyab066
Friedman, J., York, H., Graetz, N., Woyczynski, L., Whisnant, J., Hay, S.I., and Gakidou, E. 2020. Measuring and forecasting progress towards the education-related SDG targets. Nature 580, 636–639. doi: 10.1038/s41586-020-2198-8