id	domain	url
dialog-764	doi.org	https://doi.org/10.1177/001440290607300102
dialog-764	www.nber.org	http://www.nber.org/papers/w8502.pdf
dialog-764	doi.org	https://doi.org/10.1177/02711214040240030101
dialog-764	doi.org	https://doi.org/10.1177/1053815110385650
dialog-764	doi.org	https://doi.org/10.1177/001440290306900405