@article{RCM_2007_41_1_a5,
     author = {Ming Tao mtao@mail.ustc.edu.cn Zhixin Cheng czx@mail.ustc.edu.cn Jin Yan yanjin@mail.ust},
     title = {Conservation laws {I:} viscosity solutions},
     journal = {Revista colombiana de matematicas},
     pages = {81--90},
     year = {2007},
     volume = {41},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/RCM_2007_41_1_a5/}
}