@article{10_1007_s10492_008_0036_7,
     author = {Ito, Kazufumi and Kunisch, Karl},
     title = {Semi-smooth {Newton} methods for the {Signorini} problem},
     journal = {Applications of Mathematics},
     pages = {455--468},
     publisher = {mathdoc},
     volume = {53},
     number = {5},
     year = {2008},
     doi = {10.1007/s10492-008-0036-7},
     mrnumber = {2469587},
     zbl = {1199.49064},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10492-008-0036-7/}
}