@article {1989, title = {Convergence of unilateral problems for monotone operators}, journal = {J. Analyse Math. 53 (1989), 269--289}, number = {SISSA;126/88/M}, year = {1989}, publisher = {SISSA Library}, url = {http://hdl.handle.net/1963/722}, author = {Gianni Dal Maso and Anneliese Defranceschi} }