Another one that works:
javascript:window.location='http://sci-hub.st/'+window.location
(scihub detects most academic websites) javascript:window.location='http://sci-hub.st/'+window.location
(scihub detects most academic websites) javascript:location.href = 'https://sci-hub.se/' + document.getElementsByTagName('html')[0].innerHTML.match(/10\.\d{4,9}\/[-._;()\/:A-Z0-9]+/i)[0]