René Simon, Walter Zulehner,
"On Schwarz-type Smoothers for Saddle Point Problems with Applications to PDE-constrained Optimization Problems"
, in Numerische Mathematik, Vol. 111, Seite(n) 445 - 468, 2009, ISSN: 0029-599X
Original Titel:
On Schwarz-type Smoothers for Saddle Point Problems with Applications to PDE-constrained Optimization Problems