@article{10_4064_cm100_2_1,
     author = {Piotr Gwiazda and Agnieszka /Swierczewska},
     title = {An $L^1$-stability and uniqueness result for
 balance laws with multifunctions: a model
 from the theory of granular media},
     journal = {Colloquium Mathematicum},
     pages = {149--162},
     publisher = {mathdoc},
     volume = {100},
     number = {2},
     year = {2004},
     doi = {10.4064/cm100-2-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm100-2-1/}
}