id	domain	url
dem-2901	www.dem.umk.pl	http://www.dem.umk.pl/dem
dem-2901	dx.doi.org	http://dx.doi.org/10.12775/dem.2013.007
dem-2901	dx.doi.org	http://dx.doi.org/10.2139/ssrn.631007
dem-2901	dx.doi.org	http://dx.doi.org/10.1080/003434042000211105
dem-2901	dx.doi.org	http://dx.doi.org/10.1016/s0304-4076(03)00120-9
dem-2901	dx.doi.org	http://dx.doi.org/10.1111/j.1435-5957.2006.00073.x
dem-2901	dx.doi.org	http://dx.doi.org/10.1111/j.1538-4632.2010.00796.x
dem-2901	dx.doi.org	http://dx.doi.org/10.1002/jae.963
dem-2901	dx.doi.org	http://dx.doi.org/10.1111/j.1435-5957.2006.00074.x
dem-2901	www.konferencjazakopianska.pl	http://www.konferencjazakopianska.pl/proceedings/pdf/gorna_gorna_szulc.pdf
dem-2901	dx.doi.org	http://dx.doi.org/10.2307/2946651
dem-2901	dx.doi.org	http://dx.doi.org/10.1007/978-3-662-07136-6_4
dem-2901	dx.doi.org	http://dx.doi.org/10.1111/j.1085-9489.2004.00327.x
dem-2901	dx.doi.org	http://dx.doi.org/10.2307/2118477
dem-2901	dx.doi.org	http://dx.doi.org/10.1111/j.1368-423x.2010.00325.x
dem-2901	dx.doi.org	http://dx.doi.org/10.1093/jnlecg/lbh044
dem-2901	dx.doi.org	http://dx.doi.org/10.2307/1884513
dem-2901	dx.doi.org	http://dx.doi.org/10.1111/j.1475-4932.1956.tb00434.x