@book{ Solr-0bd00452, title = {The soft edge : a natural history and future of the information revolution}, author = {Levinson, Paul}, address = {London ; New York}, publisher = {Routledge}, year = {1997}, edition = {1. publ.}, url = {http://swbplus.bsz-bw.de/bsz075666936inh.htm} }