https://thetimes.gr/2020/02/%cf%84%ce%b1-%ce%ba%ce%b1%ce%bb%ce%ac-%cf%84%ce%bf%cf%85-brain-drain-%ce%b1%cf%80%cf%8c-%cf%84%ce%bf%ce%bd-%ce%ba%ce%b1%cf%80%ce%bf%ce%b4%ce%af%cf%83%cf%84%cf%81%ce%b9%ce%b1-%cf%83%cf%84%ce%bf/