@incollection {Duilio,
   author = {Conceição, Duilio and Goldfeld, Paulo and Sarkis, Marcus},
   affiliation = {IMPA, Rio de Janeiro Brazil},
   title = {Robust Two-Level Lower-Order Preconditioners for a Higher-Order Stokes Discretization with Highly Discontinuous Viscosities},
   booktitle = {High Performance Computing for Computational Science - VECPAR 2006},
   series = {Lecture Notes in Computer Science},
   editor = {Daydé, Michel and Palma, José and Coutinho, Álvaro and Pacitti, Esther and Lopes, João},
   publisher = {Springer Berlin / Heidelberg},
   isbn = {},
   pages = {319-333},
   volume = {4395},
   doi = "DOI: 10.1007/978-3-540-71351-7_25",
   url = {http://dx.doi.org/10.1007/978-3-540-71351-7_25},
   year = {2007}
}