id	domain	url
cte-420	www.fao.org	http://www.fao.org/3/i2516e/i2516e.pdf
cte-420	formathematics.com	http://formathematics.com/community/teachersforum
cte-420	ceur-ws.org	http://ceur-ws.org/vol-2168/paper3.pdf
cte-420	cyberleninka.ru	https://cyberleninka.ru/article/n/osnovnye-podhody-k-razrabotke-uchebnogo-video-vmassovyh-otkrytyh-onlayn-kursah
cte-420	ceur-ws.org	http://ceur-ws.org/vol-2433/paper16.pdf
cte-420	www.digitalcompetences-for-teachers.eu	http://www.digitalcompetences-for-teachers.eu/?page_id=13