id	domain	url
easat-6034	creativecommons.org	https://creativecommons.org/licenses/by/4.0/)
easat-6034	doi.org	https://doi.org/10.1007/s11858-006-0004-1
easat-6034	creativecommons.org	https://creativecommons.org/licenses/by/4.0
easat-6034	doi.org	https://doi.org/10.1007/s11858-006-0004-1
easat-6034	doi.org	https://doi.org/10.1177/0022487108324554
easat-6034	doi.org	https://doi.org/10.5951/jresematheduc.48.3.0261
easat-6034	doi.org	https://doi.org/10.1007/s11858-016-0795-7
easat-6034	doi.org	https://doi.org/10.1016/j.tate.2007.01.004
easat-6034	doi.org	https://doi.org/10.1177/0022487108324554
easat-6034	doi.org	https://doi.org/10.5951/jresematheduc.48.3.0261
easat-6034	doi.org	https://doi.org/10.1007/s11858-016-0795-7
easat-6034	doi.org	https://doi.org/10.1016/j.tate.2007.01.004