@article{AFM_2003_28_1_a5,
     author = {Anna Olek and Kuba Szczepaniak},
     title = {Continuous dependence on obstacles in double global obstacle problems},
     journal = {Annales Fennici Mathematici},
     pages = {89--97},
     year = {2003},
     volume = {28},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2003_28_1_a5/}
}