@article {cdh11,
   author = {Chen, Ke and Dong, Yiqiu and Hintermüller, Michael},
   title = {A Nonlinear Multigrid Solver with Line Gauss-Seidel-Semismooth-Newton-Smoother for the Fenchel-Pre-Dual in Total Variation based Image Restoration},
   journal = {Inverse Problems and Imaging 5(2), pages 323 - 339, 2011},
   pages = {332-339},
   volume = {5},
   issue = {2},
   year = {2011}
}