@incollection{PickenhainWagner2005, author = {Sabine Pickenhain and M. Wagner}, title = {Critical points in relaxed deposit problems}, booktitle = {Calculus of variations and optimal control, Technion 1998, proceedings of the International Conference on the Calculus of Variations and Related Topics, 25 - 31 March, 1998}, editor = {Alexander Ioffe}, isbn = {0-8493-0605-1}, year = {2005}, }