https://www.oecd-ilibrary.org/docserver/467cf791-en.pdf?expires=1687844142&id=id&accname=guest&checksum=E3DB362DEFB5526E94E4B65C66C86AFD
http://www.theglobalipcenter.com/wp-content/uploads/2018/02/GIPC_IP_Index_2018.pdf
http://www.lawsociety.org.uk/news/stories/leaving-in-an-orderly-fashion-our-approach-to-brexit/