id	domain	url
dem-27776	www.dem.umk.pl	http://www.dem.umk.pl/dem
dem-27776	dx.doi.org	http://dx.doi.org/10.12775/dem.2019.002
dem-27776	doi.org	https://doi.org/10.12775/dem.2018.003
dem-27776	doi.org	https://doi.org/10.2307/1913236
dem-27776	doi.org	https://doi.org/10.1016/0304-4076(81)90079-8
dem-27776	doi.org	https://doi.org/10.1016/0165-1889(88)90041-3
dem-27776	www.jstor.org	https://www.jstor.org/stable/2938278
dem-27776	doi.org	https://doi.org/10.1111/j.1468-0084.1992.tb00008.x
dem-27776	doi.org	https://doi.org/10.1111/j.1468-0084.1990.mp52002003.x
dem-27776	dx.doi.org	http://dx.doi.org/10.22495/jgr_v4_i2_p2
dem-27776	dx.doi.org	http://dx.doi.org/10.12775/dem.2011.009
dem-27776	doi.org	https://doi.org/10.1080/09603100600638944
dem-27776	dx.doi.org	http://dx.doi.org/10.12775/dem.2014.005
dem-27776	dx.doi.org	http://dx.doi.org/10.12775/dem.2018.002