@article{TRSPY_2018_301_a16,
     author = {Yu. G. Rykov},
     title = {On the variational approach to systems of quasilinear conservation laws},
     journal = {Informatics and Automation},
     pages = {225--240},
     publisher = {mathdoc},
     volume = {301},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2018_301_a16/}
}