@ARTICLE{dh11,
author = {De Los Reyes, J.C. and Hinterm\"uller, M.},
title = {A duality based semismooth Newton framework for solving variational inequalities of the second kind},
journal = {Interfaces and Free Boundaries},
volume = {13},
issue = {4},
publischer = {EMS Publishing House},
pages = {437--462},
year = {2011}
}