author = { Beerli, Andreas National Bureau of Economic Research Ruffner, Jan AND Siegenthaler, Michael AND Peri, Giovanni },

title = { The Abolition of Immigration Restrictions and the Performance of Firms and Workers Evidence from Switzerland },

publisher = {National Bureau of Economic Research},

year = {2018},

booktitle = {NBER working paper series ; no. w25302},

address = { Cambridge, Mass },

url = { http://slubdd.de/katalog?TN_libero_mab2 }