@article{702832,
     title = {On solving non-symmetric saddle-point systems arising from fictitious domain approaches},
     booktitle = {Programs and Algorithms of Numerical Mathematics},
     series = {GDML\_Books},
     publisher = {Institute of Mathematics AS CR},
     address = {Prague},
     year = {2006},
     pages = {165-171},
     url = {http://dml.mathdoc.fr/item/702832}
}

Kučera, Radek; Kozubek, Tomáš; Haslinger, Jaroslav. On solving non-symmetric saddle-point systems arising from fictitious domain approaches, dans Programs and Algorithms of Numerical Mathematics, GDML_Books,  (2006), pp. 165-171. http://gdmltest.u-ga.fr/item/702832/