@article{ETNA_2008__29__a1,
     author = {Neytcheva,  Maya and B\"angtsson,  Erik},
     title = {Preconditioning of nonsymmetric saddle point systems as arising in modelling of viscoelastic problems},
     journal = {Electronic transactions on numerical analysis},
     year = {2008},
     volume = {29},
     zbl = {1173.74045},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2008__29__a1/}
}