“Does preschool boost the development of minority children? The case of young Romas in Eastern and Central Europe” (2017), Journal of the Royal Statistical Society – Series A 180 Part II: 475-502 (with M. Huber)
"Can’t buy Mommy’s Love? Universal Child Care and Children’s Long-term Cognitive Development: Evidence from a Natural Experiment" (2015), Journal of Population Economics 26(3): 983-1005 (with N. Rodriguez-Planas & N. Nollenberger)