The Invention of Race in the European Middle Ages:
(I) https://www.academia.edu/321674/The_Invention_of_Race_in_the_European_MIddle_Ages_I_Race_Studies_Modernity_and_the_Middle_Ages

(II) https://www.academia.edu/321675/The_Invention_of_Race_in_the_European_Middle_Ages_II_Locations_of_Medieval_Race