@article{VMUMM_1991_5_a6,
     author = {S. N. Kruzhkov},
     title = {Theory of functions, and differential equations},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {36--43},
     publisher = {mathdoc},
     number = {5},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1991_5_a6/}
}