@article{ETNA_2013__40__a14,
     author = {Duff, Iain S. and Kaya, Kamer},
     title = {Preconditioners based on strong subgraphs},
     journal = {Electronic transactions on numerical analysis},
     pages = {225--248},
     publisher = {mathdoc},
     volume = {40},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2013__40__a14/}
}