Geodesic
An iterative method based on a modified Lagrangian functional for finding a saddle point in the semicoercive Signorini problem
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 46 (2006) no. 1, pp. 26-36

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The iterative Uzawa method with a modified Lagrangian functional is examined in the framework of the Signorini problem. 
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     author = {G. S. Woo and R. V. Namm and S. A. Sachkov},
     title = {An iterative method based on a~modified {Lagrangian} functional for finding a~saddle point in the semicoercive {Signorini} problem},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
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     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2006_46_1_a4/}
}
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G. S. Woo; R. V. Namm; S. A. Sachkov. An iterative method based on a modified Lagrangian functional for finding a saddle point in the semicoercive Signorini problem. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 46 (2006) no. 1, pp. 26-36. http://geodesic.mathdoc.fr/item/ZVMMF_2006_46_1_a4/