Surveys Franzoni et al., 2012; Scellato et al., 2012 Survey of authors of papers published in high quality scientific journals in 2008, in 16 top-publishing countries (excl China  70% worldwide papers) Key role of foreign authors: Switzerland (57%) US % Sweden (38%) From 33% to 17%: UK, Netherlands, Denmark, Germany, Belgium, and France Low presence (7%-3%): Spain, Japan, and Italy Migration within Europe is mainly intra-continental and driven by proximity and language US as main attractor of Chinese and Indian nationals Limitation: one-off survey / privacy issues (ltd access) / scientists have been historically a globalised community Global Science Survey (GlobSci)
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