%0 Journal Article %A Jay, Laurent O. %A Negrut, Dan %T Extensions of the HHT-$\alpha $ method to differential-algebraic equations in mechanics %J Electronic transactions on numerical analysis %D 2007 %P 190-208 %V 26 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_2007__26__a15/ %G en %F ETNA_2007__26__a15