id	domain	url
flr-485	doi.org	http://doi.org/10.1037/a0017762
flr-485	www.sciencedirect.com	http://www.sciencedirect.com/science/article/pii/s0272-7757(05)00011-7
flr-485	dx.doi.org	http://dx.doi.org/10.1016/j.learninstruc.2012.12.001