author = { Lucas, Robert E, Jr National Bureau of Economic Research Moll, Benjamin },

title = { Knowledge Growth and the Allocation of Time },

publisher = {National Bureau of Economic Research},

year = {October 2011},

booktitle = {NBER working paper series ; no. w17495},

address = { Cambridge, Mass },

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