@book{ Solr-492992, title = {Using Patents Data to Map Technical Change in Health-Related Areas [E-Book]}, series = {OECD Science, Technology and Industry Working Papers ;}, author = {Lichtenberg, Frank.}, editor = {Lichtenberg, Frank.}, editor = {Virabhak, Suchin.}, address = {Paris}, publisher = {OECD Publishing}, year = {2002}, pages = {48}, note = {englisch}, url = {http://dx.doi.org/10.1787/522485718871} }