Walter Zulehner, Joachim Schöberl, René Simon,
"A Robust Multigrid Method for Elliptic Optimal Control Problems"
, in SIAM Journal on Numerical Analysis, Vol. 49, Seite(n) 1482 - 1503, 2011, ISSN: 1095-7170
Original Titel:
A Robust Multigrid Method for Elliptic Optimal Control Problems