J<sc>iang</sc> X., D<sc>ietzenbacher</sc> E. and L<sc>os</sc> B. Improved estimation of regional input--output tables using cross-regional methods, <italic>Regional Studies</italic>. Many regional input--output tables are estimated by means of non-survey methods. Often, information on the margins of the projected table is complemented by...

Frenken K., Van Oort F. and Verburg T. (2007) Related variety, unrelated variety and regional economic growth, Regional Studies 41, 685-697. In economic theory, one can distinguish between variety as a source of regional knowledge spillovers, called Jacobs externalities, and variety as a...