%P 216-239
%I Routledge
%D 2001
%V 2
%L eprints656
%E Antonio Nicita
%E Ugo Pagano
%A Fabio Pammolli
%A Luigi Orsenigo
%A Massimo Riccaboni
%S Routledge Siena studies in political economy
%B Antonio Nicita and Ugo Pagano (eds). The Evolution of Economic Diversity
%T Variety and Irreversibility in Scientific and Technological Systems: the Evolution of an Industry Network
%C London