Links
[1] http://gdc.gale.com/products/the-economist-historical-archive-1843-2007/
[2] https://edesiderata.crl.edu/providers/gale
[3] https://support.gale.com/technical/openurl
[4] https://support.gale.com/technical/sru_supported_databases
[5] http://www.cengage.com/us/
[6] https://edesiderata.crl.edu/www.crl.edu/node/6572
[7] http://www.ccadvisor.org/review/10.5260/CCA.199255