@article{ETNA_2006__23__a9,
     author = {Schenk, Olaf and G\"artner, Klaus},
     title = {On fast factorization pivoting methods for sparse symmetric indefinite systems},
     journal = {Electronic transactions on numerical analysis},
     pages = {158--179},
     publisher = {mathdoc},
     volume = {23},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2006__23__a9/}
}