4 IZA Discussion Papers
IZA Discussion Paper No. 7188
published in: Robert M. Sauer (ed.), The Economics of Religion, World Scientific, 2023, 147-155
IZA Discussion Paper No. 6427
IZA Discussion Paper No. 3915
published in: Journal of Positive Psychology, 2010, 5 (1), 73-82
IZA Discussion Paper No. 3031
published in: Economics of Education Review, 2009, 28 (6), 716-727