@article{ETNA_2007__26__a15,
     author = {Jay, Laurent O. and Negrut, Dan},
     title = {Extensions of the {HHT-}$\alpha $ method to differential-algebraic equations in mechanics},
     journal = {Electronic transactions on numerical analysis},
     pages = {190--208},
     publisher = {mathdoc},
     volume = {26},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2007__26__a15/}
}