author = { Narodowy Bank Polski },

title = { NBP working paper },

publisher = {[Verlag nicht ermittelbar]},

isbn = {2084-624X},

keywords = { Amtsdruckschrift , Graue Literatur , Monografische Reihe },

year = {2007-},

address = { Warsaw },

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