3 IZA Discussion Papers
IZA Discussion Paper No. 17253
IZA Discussion Paper No. 12204
published as 'Is four less than five? Effects of four-day school weeks on student achievement in Oregon' in: Journal of Public Economics, 2021, 193, 104308
IZA Discussion Paper No. 8734
published in: Journal of Human Resources, 2015, 50 (1), 108-158