@article{M2AN_1998__32_5_521_0,
     author = {Babu\v{s}ka, I. and Shi, P.},
     title = {Regularity of solutions to a one dimensional plasticity model},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {521--537},
     publisher = {Elsevier},
     volume = {32},
     number = {5},
     year = {1998},
     mrnumber = {1643489},
     zbl = {0906.73028},
     language = {en},
     url = {http://archive.numdam.org/item/M2AN_1998__32_5_521_0/}
}