Analysis of CIS-2 data on innovation in the service sector : an EIMS study funded by the European Commission within the Innovation Programme ; a report for the European Commission (CIS contract 98/184)
Tether, Bruce S., (2000)
Innovazione e occupazione in Italia e in Europa
Pianta, Mario, (1998)
Das europäische Städte- und Regionensystem im Wandel
Heidenreich, Martin, (1999)