@article{PORMA_2003__60_2_44740,
     author = {Prigozhin, Leonid and Zaltzman, Boris},
     title = {On the approximation of the dynamics of sandpile surfaces.},
     journal = {Portugaliae mathematica},
     pages = {127--137},
     publisher = {mathdoc},
     volume = {60},
     number = {2},
     year = {2003},
     zbl = {1206.82098},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_2003__60_2_44740/}
}