@article{RM_2019_74_6_a3,
     author = {A. I. Aptekarev and Yu. G. Rykov},
     title = {Variational principle for multidimensional conservation laws and pressureless media},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1117--1119},
     publisher = {mathdoc},
     volume = {74},
     number = {6},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2019_74_6_a3/}
}