“...We consider the numerical solution of the Helmholtz equation in domains with one infinite cylindrical waveguide. Such problems exhibit wavenumbers on different...”

“...Despite the growing incidence of cesarean deliveries (CDs), procedure costs and benefits continue to be controversially discussed. In this study, we identify...”

“...In this article we study the social norms to abstain from cheating on the state via benefit fraud and tax evasion. We interpret these norms (called benefit...”

“...The East-West gap in the German population is believed to originate from migrants escaping the socialist regime in the German Democratic Republic (GDR). We use...”

“...Policies to promote marriage are controversial, and it is unclear whether they are successful. To analyze such policies, one must distinguish between a...”

“...Since the 1970s almost all US states have introduced a form of joint custody after divorce. I analyze the causal effect of these custody law reforms on...”

“...SUMMARY This paper explores individual motives for volunteering. The analysis is based on the interpretation of volunteering as a consumption good (consumption...”

“...Volunteering participation rates vary greatly across countries even when the potential volunteers' individual characteristics are controlled. We therefore...”

“...This paper explores the historical origins of the cultural norm regarding illegitimacy (formerly known as bastardy). We test the hypothesis that traditional...”

“...Whether a country is able effectively to address collective action problems is a critical test of its ability to fulfill the demands of its citizens to their...”