@Article{	  MR2513093,
  author	= {Neitzel, Ira and Tr{\"o}ltzsch, Fredi},
  title		= {On regularization methods for the numerical solution of
		  parabolic control problems with pointwise state
		  constraints},
  journal	= {ESAIM Control Optim. Calc. Var.},
  fjournal	= {ESAIM. Control, Optimisation and Calculus of Variations},
  volume	= {15},
  year		= {2009},
  number	= {2},
  pages		= {426--453},
  issn		= {1292-8119},
  mrclass	= {49K20 (49M05 49N10 65K10)},
  mrnumber	= {2513093 (2010h:49041)},
  mrreviewer	= {Daniel Wachsmuth},
  doi		= {10.1051/cocv:2008038},
  url		= {http://dx.doi.org/10.1051/cocv:2008038},
  annote	= {journal}
}