The Helsinki GSE Discussion Paper series is available on EconStor. EconStor is an open access server that provides a platform for the free distribution of academic literature in economics.
We turn the zero-profit condition that is typically used to determine the number of firms into a game of entry/exit. We assume that identical firms compete in Cournot fashion, and when market …
We study the effect of school closures and the transition from on-site to on-line teaching during the Covid-19 pandemic in the Finnish upper secondary schools. To identify the effects we exploit …