%0 Journal Article %A Maurischat, Andreas %T Prolongations of $t$-Motives and Algebraic Independence of Periods %J Documenta mathematica %D 2018 %P 815-838 %V 23 %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2018__23__a37/ %G en %F DOCMA_2018__23__a37