https://www.wired.com/story/russian-techies-exodus-ukraine/?utm_source=newsletter&utm_medium=email&utm_campaign=23%2F03%2F22++(Copy)+(Copy)#intcid=_wired-verso-hp-trending_444226e1-5b4d-43c1-bdac-d4a2c5859d2f_popular4-1
https://dgap.org/system/files/article_pdfs/DPC%20-%20fully%20study%202023%20-%20final.pdf
https://deliverypdf.ssrn.com/delivery.php?ID=311071073029064107081106000088122120035055026027031023101089114109004122092126125009003043120052118045043115122093122090125016013080071041077125098094010078021014089007006008095097069030010030120071096073064079068008005002094092111071089019104067112068&EXT=pdf&INDEX=TRUE