%0 Journal Article %A Blomer, Valentin %A Kala, Vítězslav %T On the Rank of Universal Quadratic Forms over Real Quadratic Fields %J Documenta mathematica %D 2018 %P 15-34 %V 23 %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2018__23__a61/ %G en %F DOCMA_2018__23__a61