@Article{	  MR3385644,
  author	= {Beuchler, S. and Hofer, K. and Wachsmuth, D. and Wurst,
		  J.-E.},
  title		= {Boundary concentrated finite elements for optimal control
		  problems with distributed observation},
  journal	= {Comput. Optim. Appl.},
  fjournal	= {Computational Optimization and Applications. An
		  International Journal},
  volume	= {62},
  year		= {2015},
  number	= {1},
  pages		= {31--65},
  issn		= {0926-6003},
  mrclass	= {65N30 (49K20 49M25 65N15)},
  mrnumber	= {3385644},
  doi		= {10.1007/s10589-015-9737-5},
  url		= {http://dx.doi.org/10.1007/s10589-015-9737-5}
}