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How much should governments subsidize the development of new clean technologies? We use patent citation data to investigate the relative intensity of knowledge spillovers in clean and dirty technologies in four technological fields: energy production, automobiles, fuel and lighting. We find that clean patents receive on average 43% more citations than dirty patents. Clean patents are also cited...
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ژورنال
عنوان ژورنال: Journal of Agricultural and Applied Economics
سال: 2015
ISSN: 1074-0708,2056-7405
DOI: 10.1017/aae.2014.1