id	domain	url
ger-394	creativecommons.org	https://creativecommons.org/licenses/by/4.0
ger-394	www.tandfonline.com	http://www.tandfonline.com/doi/abs/10.1080/00131881.2016.1165410
ger-394	www.tandfonline.com	http://www.tandfonline.com/doi/abs/10.1080/00131881.2016.1165410
ger-394	www.tandfonline.com	http://www.tandfonline.com/toc/rere20/58/2
ger-394	www.tandfonline.com	http://www.tandfonline.com/toc/rere20/58/2
ger-394	www.oecd.org	https://www.oecd.org/pisa/pisa-2015-results-infocus.pdf