00765nam0-22002531i-450-990003086090403321000308609FED01000308609(Aleph)000308609FED0100030860920000920d--------km-y0itay50------baitaITGeographic Localization of Knowledge Spillovers as Evidenced by Patent CitationsAdam B. Jaffe...[et al.]Working paper seriesNBER3993Jaffe,Adam B.ITUNINARICAUNIMARCBK990003086090403321PaperSESSESGeographic Localization of Knowledge Spillovers as Evidenced by Patent Citations460415UNINAING01